@
<
HTML
@
CSS
 
@
validator
success
Special Notes and Key Performance Indicators for CSS Processed by Email Clients
Transparency ::
Using the inputs below, one can expose the performance based assumptions which regulate the scoring algorithm behind this validator.

Matching (and source of record) information can be found within Campaign Monitor's Ultimate Guide to CSS, here.
Click here to get all of this data in a single & proper massive large server response.
The drop down combo box that is below can be used as well.
The HTML <style> element contains style information for a document, or part of a document. It contains CSS, which is applied to the contents of the document containing the <style> element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The HTML <style> element contains style information for a document, or part of a document. It contains CSS, which is applied to the contents of the document containing the <style> element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The HTML External Resource Link element (<link>) specifies relationships between the current document and an external resource. This element is most commonly used to link to stylesheets, but is also used to establish site icons (both "favicon" style icons and icons for the home screen and apps on mobile devices) among other things.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
When images are downloaded.
success
Postbox
When images are downloaded.
success
Thunderbird
When images are downloaded.
success
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The HTML External Resource Link element (<link>) specifies relationships between the current document and an external resource. This element is most commonly used to link to stylesheets, but is also used to establish site icons (both "favicon" style icons and icons for the home screen and apps on mobile devices) among other things.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
When images are downloaded.
success
Postbox
When images are downloaded.
success
Thunderbird
When images are downloaded.
success
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries. With it, you specify a media query and a block of CSS to apply to the document if and only if the media query matches the device on which the content is being used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The all shorthand CSS property resets all of an element's properties except unicode-bidi, direction, and CSS Custom Properties. It can set properties to their initial or inherited values, or to the values specified in another stylesheet origin.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The any-hover CSS media feature can be used to test whether any available input mechanism can hover over elements.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The any-pointer CSS media feature tests whether the user has any pointing device (such as a mouse), and if so, how accurate it is.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The :hover CSS pseudo-class matches when the user interacts with an element with a pointing device, but does not necessarily activate it. It is generally triggered when the user hovers over an element with the cursor (mouse pointer).
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The aspect-ratio CSS media feature can be used to test the aspect ratio of the viewport.<br><br> The aspect-ratio feature is specified as a <ratio> value representing the width-to-height aspect ratio of the viewport. It is a range feature, meaning you can also use the prefixed min-aspect-ratio and max-aspect-ratio variants to query minimum and maximum values, respectively.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-aspect-ratio CSS media feature can be used to test the width-to-height aspect ratio of an output device.<br><br> The device-aspect-ratio feature is specified as a <ratio>. It is a range feature, meaning that you can also use the prefixed min-device-aspect-ratio and max-device-aspect-ratio variants to query minimum and maximum values, respectively. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-height CSS media feature can be used to test the height of an output device's rendering surface.<br><br> The device-height feature is specified as a <length> value. It is a range feature, meaning that you can also use the prefixed min-device-height and max-device-height variants to query minimum and maximum values, respectively. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The -webkit-device-pixel-ratio is a non-standard Boolean CSS media feature which is an alternative to the standard resolution media feature.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-width CSS media feature can be used to test the width of an output device's rendering surface.<br><br> The device-width feature is specified as a <length> value. It is a range feature, meaning that you can also use the prefixed min-device-width and max-device-width variants to query minimum and maximum values, respectively. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The max-height CSS property sets the maximum height of an element. It prevents the used value of the height property from becoming larger than the value specified for max-height.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The resolution CSS media feature can be used to test the pixel density of the output device.<br><br> The resolution feature is specified as a <resolution> value representing the pixel density of the output device. It is a range feature, meaning that you can also use the prefixed min-resolution and max-resolution variants to query minimum and maximum values, respectively.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
!
Postbox
Partial. Supports dpi and dpcm values, but not dppx.
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The aspect-ratio CSS media feature can be used to test the aspect ratio of the viewport.<br><br> The aspect-ratio feature is specified as a <ratio> value representing the width-to-height aspect ratio of the viewport. It is a range feature, meaning you can also use the prefixed min-aspect-ratio and max-aspect-ratio variants to query minimum and maximum values, respectively.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-aspect-ratio CSS media feature can be used to test the width-to-height aspect ratio of an output device. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-height CSS media feature can be used to test the height of an output device's rendering surface. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The -moz-device-pixel-ratio Gecko-only CSS media feature can be used to apply styles based on the number of device pixels per CSS pixel. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The device-width CSS media feature can be used to test the width of an output device's rendering surface.<br><br> The device-width feature is specified as a <length> value. It is a range feature, meaning that you can also use the prefixed min-device-width and max-device-width variants to query minimum and maximum values, respectively. DEPRECATED.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The min-height CSS property sets the minimum height of an element. It prevents the used value of the height property from becoming smaller than the value specified for min-height.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The resolution CSS media feature can be used to test the pixel density of the output device.<br><br> The resolution feature is specified as a <resolution> value representing the pixel density of the output device. It is a range feature, meaning that you can also use the prefixed min-resolution and max-resolution variants to query minimum and maximum values, respectively.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
!
Postbox
Partial. Supports dpi and dpcm values, but not dppx.
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The min-width CSS property sets the minimum width of an element. It prevents the used value of the width property from becoming smaller than the value specified for min-width.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The orientation CSS media feature can be used to test the orientation of the viewport (or the page box, for paged media).
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The pointer CSS media feature tests whether the user has a pointing device (such as a mouse), and if so, how accurate the primary pointing device is.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The @font-face CSS at-rule specifies a custom font with which to display text; the font can be loaded from either a remote server or a locally-installed font on the user's own computer.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
User is prompted to download webfont, but it doesn't display.
success
Outlook for Mac
When images are downloaded.
!
Postbox
Partial. User is prompted to download webfont, but only embedded (base64 encoded) fonts display.
!
Thunderbird
Partial. User is prompted to download webfont, but only embedded (base64 encoded) fonts display.
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
When images are downloaded.
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
success
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The svg element is a container that defines a new coordinate system and viewport. It is used as the outermost element of SVG documents, but it can also be used to embed an SVG fragment inside an SVG or HTML document.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
WOFF (the Web Open Font Format) is a web font format developed by Mozilla in concert with Type Supply, LettError, and other organizations. It uses a compressed version of the same table-based sfnt structure used by TrueType, OpenType, and Open Font Format, but adds metadata and private-use data structures, including predefined fields allowing foundries and vendors to provide license information if desired.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The direction CSS property sets the direction of text, table columns, and horizontal overflow. Use rtl for languages written from right to left (like Hebrew or Arabic), and ltr for those written from left to right (like English and most other languages).
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The font CSS shorthand property sets all the different properties of an element's font. Alternatively, it sets an element's font to a system font.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Buggy.
success
Outlook 2000-03
!
Outlook 2007-16
Mostly supported, but the shorthand property fails to override font-weight.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Mostly supported, but the shorthand property fails to override font-weight.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The font-family CSS property specifies a prioritized list of one or more font family names and/or generic family names for the selected element.
DESKTOP :: Email Client Support
!
AOL Desktop
Mostly supported, but unquoted font names containing line breaks don't work.
success
Apple Mail 10
!
IBM Notes 9
Buggy.
!
Outlook 2000-03
Mostly supported, but unquoted font names containing line breaks don't work.
success
Outlook 2007-16
!
Outlook Express
Mostly supported, but unquoted font names containing line breaks don't work.
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
!
Windows Live Mail
Mostly supported, but unquoted font names containing line breaks don't work.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Mostly supported, but unquoted font names containing line breaks don't work.
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The font-feature-settings CSS property controls advanced typographic features in OpenType fonts.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The font-kerning CSS property sets the use of the kerning information stored in a font.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The font-size CSS property sets the size of the font. Changing the font size also updates the sizes of the font size-relative <length> units, such as em, ex, and so forth.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial. Supports px, pt, pc, and keywords, but not other units.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
!
Gmail Android app
Partial. Doesn't support all keywords.
!
Gmail Android IMAP
Partial. Doesn't support all keywords.
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
!
iOS 10 Mail
By default, minimum font size is 13px. Use -webkit-text-size-adjust: 100%; to override.
!
iOS 11 Mail
By default, minimum font size is 13px. Use -webkit-text-size-adjust: 100%; to override.
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The font-size-adjust CSS property sets the size of lower-case letters relative to the current font size (which defines the size of upper-case letters).
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The font-stretch CSS property selects a normal, condensed, or expanded face from a font.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
!
Postbox
Partial. Supports exact font-stretch matches, but doesn't map non-matches to the nearest face.
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
The property itself is intact, but the necessary media query is removed.
X
Gmail
The property itself is intact, but the necessary media query is removed.
X
Google Inbox
The property itself is intact, but the necessary media query is removed.
X
Outlook.com
X
Yahoo! Mail
The font-style CSS property sets whether a font should be styled with a normal, italic, or oblique face from its font-family.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
X
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
!
Outlook.com
Partial. Supports italic, but not oblique.
success
Yahoo! Mail
The font-synthesis CSS property controls which missing typefaces, bold or italic, may be synthesized by the browser.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
X
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The font-variant CSS shorthand property allows you to set all the font variants for a font.<br><br> You can also set the CSS Level 2 (Revision 1) values of font-variant, (that is, normal or small-caps), by using the font shorthand.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Supports CSS2 values, but not CSS3.
success
Apple Mail 10
X
IBM Notes 9
!
Outlook 2000-03
Partial. Supports CSS2 values, but not CSS3.
!
Outlook 2007-16
Partial. Supports CSS2 values, but not CSS3.
!
Outlook Express
Partial. Supports CSS2 values, but not CSS3.
success
Outlook for Mac
!
Postbox
Partial. Supports CSS2 values, but not CSS3.
success
Thunderbird
!
Windows 10 Mail
Partial. Supports CSS2 values, but not CSS3.
!
Windows Live Mail
Partial. Supports CSS2 values, but not CSS3.
MOBILE :: Email Client Support
!
Android 4.2.2 Mail
Partial. Supports CSS2 values, but not CSS3.
!
Android 4.4.4 Mail
Partial. Supports CSS2 values, but not CSS3.
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Supports CSS2 values, but not CSS3.
success
Gmail Android app
!
Gmail Android IMAP
Partial. Supports CSS2 values, but not CSS3.
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Partial. Supports CSS2 values, but not CSS3.
!
Yahoo! Mail Android app
Partial. Supports CSS2 values, but not CSS3.
!
Yahoo! Mail iOS app
Partial. Supports CSS2 values, but not CSS3.
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
!
Yahoo! Mail
Partial. Supports CSS2 values, but not CSS3.
The font-weight CSS property sets the weight (or boldness) of the font. The weights available depend on the font-family that is currently set.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The hyphens CSS property specifies how words should be hyphenated when text wraps across multiple lines. It can prevent hyphenation entirely, hyphenate at manually-specified points within the text, or let the browser automatically insert hyphens where appropriate.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
!
Android 4.2.2 Mail
Partial. Supports none with -webkit prefix.
X
Android 4.4.4 Mail
!
AOL Alto Android app
Partial. Breaks words, but doesn't add hyphens.
success
AOL Alto iOS app
Supported with -webkit prefix.
!
BlackBerry
Partial support with -webkit prefix. Breaks words, but doesn't add hyphens.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The letter-spacing CSS property sets the horizontal spacing behavior between text characters. This value is added to the natural spacing between characters while rendering the text. Positive values of letter-spacing causes characters to spread farther apart, while negative values of letter-spacing bring characters closer together.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The line-height CSS property sets the height of a line box. It's commonly used to set the distance between lines of text. On block-level elements, it specifies the minimum height of line boxes within the element. On non-replaced inline elements, it specifies the height that is used to calculate line box height.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The overflow-wrap CSS property applies to inline elements, setting whether the browser should insert line breaks within an otherwise unbreakable string to prevent text from overflowing its line box.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The text-align CSS property sets the horizontal alignment of a block element or table-cell box. This means it works like vertical-align but in the horizontal direction.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial. Doesn't support justified.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The text-decoration shorthand CSS property sets the appearance of decorative lines on text. It is a shorthand for text-decoration-line, text-decoration-color, text-decoration-style, and the newer text-decoration-thickness property.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial. Only supports line-through and underline.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The -webkit-text-fill-color CSS property specifies the fill color of characters of text. If this property is not set, the value of the color property is used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
Supported with -webkit prefix.
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
Supported with -webkit prefix.
success
AOL Alto iOS app
Supported with -webkit prefix.
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
success
Outlook Android app
Supported with -webkit prefix.
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The text-indent CSS property sets the length of empty space (indentation) that is put before lines of text in a block
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The text-overflow CSS property sets how hidden overflow content is signaled to users. It can be clipped, display an ellipsis ('…'), or display a custom string.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
X
Gmail Android IMAP
success
Gmail iOS app
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Gmail mobile webmail
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Google Inbox Android app
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Google Inbox iOS app
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Gmail
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Google Inbox
Property is supported, but the client breaks long words with <wbr> elements. And the word-wrap property defaults to break-word.
success
Outlook.com
X
Yahoo! Mail
The text-shadow CSS property adds shadows to text. It accepts a comma-separated list of shadows to be applied to the text and any of its decorations. Each shadow is described by some combination of X and Y offsets from the element, blur radius, and color.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
success
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
!
Yahoo! Mail Android app
Partial. Supports a single shadow per element, but not multiple.
!
Yahoo! Mail iOS app
Partial. Supports a single shadow per element, but not multiple.
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
!
Yahoo! Mail
Partial. Supports a single shadow per element, but not multiple.
The text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.
DESKTOP :: Email Client Support
X
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
X
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
Supported with -webkit prefix.
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The -webkit-text-stroke CSS property specifies the width and color of strokes for text characters. This is a shorthand property for the longhand properties -webkit-text-stroke-width and -webkit-text-stroke-color.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
Supported with -webkit prefix.
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
Supported with -webkit prefix.
success
AOL Alto iOS app
Supported with -webkit prefix.
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
success
Outlook Android app
Supported with -webkit prefix.
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The -webkit-text-stroke-color CSS property specifies the stroke color of characters of text. If this property is not set, the value of the color property is used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
Supported with -webkit prefix.
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
Supported with -webkit prefix.
success
AOL Alto iOS app
Supported with -webkit prefix.
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
success
Outlook Android app
Supported with -webkit prefix.
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The -webkit-text-stroke-width CSS property specifies the width of the stroke for text.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
Supported with -webkit prefix.
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
Supported with -webkit prefix.
success
AOL Alto iOS app
Supported with -webkit prefix.
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
success
Outlook Android app
Supported with -webkit prefix.
X
Outlook iOS app
success
Sparrow
Supported with -webkit prefix.
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The text-transform CSS property specifies how to capitalize an element's text. It can be used to make text appear in all-uppercase or all-lowercase, or with each word capitalized. It also can help improve legibility for ruby.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial. Only uppercase is supported.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Only uppercase is supported.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The vertical-align CSS property sets vertical alignment of an inline, inline-block or table-cell box.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial. Supports keywords and px values, but not %.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Supports px values, but not %. Keywords are not supported on images.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The white-space CSS property sets how white space inside an element is handled.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial. Supports normal and pre, but not nowrap.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Supports normal and pre, but not nowrap.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The word-spacing CSS property sets the length of space between words and between tags.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Supports spacing between words, but not spacing between elements.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The overflow-wrap CSS property applies to inline elements, setting whether the browser should insert line breaks within an otherwise unbreakable string to prevent text from overflowing its line box.<br><br> The property was originally a nonstandard and unprefixed Microsoft extension called word-wrap, and was implemented by most browsers with the same name. It has since been renamed to overflow-wrap, with word-wrap being an alias.
DESKTOP :: Email Client Support
!
AOL Desktop
Buggy. Text styled with word-wrap: normal is clipped, instead of breaking out of container.
success
Apple Mail 10
X
IBM Notes 9
!
Outlook 2000-03
Buggy. Text styled with word-wrap: normal is clipped, instead of breaking out of container.
X
Outlook 2007-16
!
Outlook Express
Buggy. Text styled with word-wrap: normal is clipped, instead of breaking out of container.
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
!
Windows Live Mail
Buggy. Text styled with word-wrap: normal is clipped, instead of breaking out of container.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
!
Gmail iOS app
Partial. Only supports break-word on the first line of text.
!
Gmail mobile webmail
Partial. Only supports break-word on the first line of text.
success
Google Inbox Android app
!
Google Inbox iOS app
Buggy. Only supports break-word on the first line of text.
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
Property is supported, but the word-break property defaults to break-word.
The background shorthand CSS property sets all background style properties at once, such as color, image, origin and size, or repeat method.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Fixed attachment is not supported.
success
Apple Mail 10
X
IBM Notes 9
!
Outlook 2000-03
Partial. Slash syntax values are not supported.
X
Outlook 2007-16
!
Outlook Express
Partial. Values containing background images are not supported.
success
Outlook for Mac
!
Postbox
Partial. Slash syntax values are not supported.
success
Thunderbird
X
Windows 10 Mail
!
Windows Live Mail
Partial. Values containing background images are not supported.
MOBILE :: Email Client Support
!
Android 4.2.2 Mail
Partial. Slash syntax values are not supported.
!
Android 4.4.4 Mail
Partial. Fixed attachment is not supported.
!
AOL Alto Android app
Partial. Fixed attachment is not supported.
success
AOL Alto iOS app
!
BlackBerry
Partial. Fixed attachment is not supported.
!
Gmail Android app
Partial. Fixed attachment is not supported.
!
Gmail Android IMAP
Partial. Background images are not supported.
success
Gmail iOS app
success
Gmail mobile webmail
!
Google Inbox Android app
Partial. Fixed attachment is not supported.
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
!
Outlook Android app
Partial. Fixed attachment is not supported.
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Partial. Seems to only support background colors.
!
Yahoo! Mail Android app
Partial. Seems to only support background colors.
!
Yahoo! Mail iOS app
Partial. Slash syntax values are not supported.
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
!
Yahoo! Mail
Buggy. For slash syntax values, it removes the slash character, making the value invalid.
The background-attachment CSS property sets whether a background image's position is fixed within the viewport, or scrolls with its containing block.
DESKTOP :: Email Client Support
success
AOL Desktop
X
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The background-blend-mode CSS property sets how an element's background images should blend with each other and with the element's background color.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The background-color CSS property sets the background color of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial. Only supported on tables.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The background-image CSS property sets one or more background images on an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The background-position CSS property sets the initial position for each background image. The position is relative to the position layer set by background-origin.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The background-repeat CSS property sets how background images are repeated. A background image can be repeated along the horizontal and vertical axes, or not repeated at all.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The color CSS property sets the foreground color value of an element's text and text decorations, and sets the <currentcolor> value. currentcolor may be used as an indirect value on other properties and is the default for other color properties, such as border-color.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The isolation CSS property determines whether an element must create a new stacking context.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The mix-blend-mode CSS property sets how an element's content should blend with the content of the element's parent and the element's background.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
CSS gradients are represented by the <gradient> data type, a special type of <image> made of a progressive transition between two or more colors. You can choose between three types of gradients: linear (created with the linear-gradient() function), radial (created with radial-gradient()), and conic (created with the conic-gradient() function). You can also create repeating gradients with the repeating-linear-gradient(), repeating-radial-gradient(), and repeating-conic-gradient() functions.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
Supported with -moz prefix.
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
You can apply multiple backgrounds to elements. These are layered atop one another with the first background you provide on top and the last background listed in the back. Only the last background can include a background color.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
Color names.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
In computing, on the X Window System, X11 color names are represented in a simple text file, which maps certain strings to RGB color values.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
Hexadecimal color values are also supported in all browsers.<br><br> A hexadecimal color is specified with: #RRGGBB.<br><br> RR (red), GG (green) and BB (blue) are hexadecimal integers between 00 and FF specifying the intensity of the color.<br><br> For example, #0000FF is displayed as blue, because the blue component is set to its highest value (FF) and the others are set to 00.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The format of an RGB value in hexadecimal notation is a '#' immediately followed by either three or six hexadecimal characters. The three-digit RGB notation (#rgb) is converted into six-digit form (#rrggbb) by replicating digits, not by adding zeros.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The hsl() functional notation expresses a given color according to its hue, saturation, and lightness components. An optional alpha component represents the color's transparency.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The hsla() functional notation expresses a given color according to its hue, saturation, and lightness components. An optional alpha component represents the color's transparency.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The rgb() functional notation expresses a color according to its red, green, and blue components. An optional alpha component represents the color's transparency.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The rgba() functional notation expresses a color according to its red, green, and blue components. An optional alpha component represents the color's transparency.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The currentcolor keyword represents the value of an element's color property. This lets you use the color value on properties that do not receive it by default.<br><br> If currentcolor is used as the value of the color property, it instead takes its value from the inherited value of the color property.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border shorthand CSS property sets an element's border. It sets the values of border-width, border-style, and border-color.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom shorthand CSS property sets an element's bottom border. It sets the values of border-bottom-width, border-bottom-style and border-bottom-color.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom-color CSS property sets the color of an element's bottom border. It can also be set with the shorthand CSS properties border-color or border-bottom.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom-left-radius CSS property rounds the bottom-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom-right-radius CSS property rounds the bottom-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom-style CSS property sets the line style of an element's bottom border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-bottom-width CSS property sets the width of the bottom border of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-color shorthand CSS property sets the color of an element's border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy. Fails to override the shorthand border property.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy. Fails to override the shorthand border property.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-image CSS property draws an image around a given element. It replaces the element's regular border.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The border-left shorthand CSS property sets all the properties of an element's left border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-left-color CSS property sets the color of an element's left border. It can also be set with the shorthand CSS properties border-color or border-left.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-left-style CSS property sets the line style of an element's left border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-left-width CSS property sets the width of the left border of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-right shorthand CSS property sets all the properties of an element's right border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-right-color CSS property sets the color of an element's right border. It can also be set with the shorthand CSS properties border-color or border-right.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-right-style CSS property sets the line style of an element's right border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-right-width CSS property sets the width of the right border of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-style shorthand CSS property sets the line style for all four sides of an element's border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top shorthand CSS property sets all the properties of an element's top border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top-color CSS property sets the color of an element's top border. It can also be set with the shorthand CSS properties border-color or border-top.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top-left-radius CSS property rounds the top-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top-right-radius CSS property rounds the top-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top-style CSS property sets the line style of an element's top border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
success
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-top-width CSS property sets the width of the top border of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-width shorthand CSS property sets the width of an element's border.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
success
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The box-sizing CSS property sets how the total width and height of an element is calculated.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The height CSS property specifies the height of an element. By default, the property defines the height of the content area. If box-sizing is set to border-box, however, it instead determines the height of the border area.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
!
IBM Notes 9
Partial support on table elements.
success
Outlook 2000-03
!
Outlook 2007-16
Partial support on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial support on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
!
Yahoo! Mail Android app
Buggy. Client changes the height property to min-height.
!
Yahoo! Mail iOS app
Buggy. Client changes the height property to min-height.
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
!
Yahoo! Mail
Buggy. Client changes the height property to min-height.
The margin CSS property sets the margin area on all four sides of an element. It is a shorthand for margin-top, margin-right, margin-bottom, and margin-left.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The margin-bottom CSS property sets the margin area on the bottom of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The margin-left CSS property sets the margin area on the left side of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The margin-right CSS property sets the margin area on the right side of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The margin-top CSS property sets the margin area on the top of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Buggy.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Buggy.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The max-height CSS property sets the maximum height of an element. It prevents the used value of the height property from becoming larger than the value specified for max-height.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Not supported on tables.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
!
Android 4.4.4 Mail
Partial. Not supported on tables.
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Not supported on tables.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The min-height CSS property sets the minimum height of an element. It prevents the used value of the height property from becoming smaller than the value specified for min-height.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Not supported on tables.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
!
Yahoo! Mail iOS app
Supported, but because the client changes height to min-height, that value will override this one if it comes after.
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
!
Yahoo! Mail
Supported, but because the client changes height to min-height, that value will override this one if it comes after.
The min-width CSS property sets the minimum width of an element. It prevents the used value of the width property from becoming smaller than the value specified for min-width.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Not supported on tables.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The padding CSS shorthand property sets the padding area on all four sides of an element at once.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial but buggy support, mainly on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial but buggy support, mainly on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The padding-bottom CSS property sets the height of the padding area on the bottom of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial but buggy support, mainly on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial but buggy support, mainly on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The padding-left CSS property sets the width of the padding area to the left of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial but buggy support, mainly on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial but buggy support, mainly on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The padding-right CSS property sets the width of the padding area on the right of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial but buggy support, mainly on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial but buggy support, mainly on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The padding-top CSS property sets the height of the padding area on the top of an element.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial but buggy support, mainly on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial but buggy support, mainly on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The width CSS property sets an element's width. By default, it sets the width of the content area, but if box-sizing is set to border-box, it sets the width of the border area.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
success
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial support on table elements.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial support on table elements.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The bottom CSS property participates in setting the vertical position of a positioned element. It has no effect on non-positioned elements.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The clear CSS property sets whether an element must be moved below (cleared) floating elements that precede it. The clear property applies to floating and non-floating elements.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The cursor CSS property sets the type of mouse cursor, if any, to show when the mouse pointer is over an element.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Doesn't support url() or none.
success
Apple Mail 10
X
IBM Notes 9
!
Outlook 2000-03
Partial. Doesn't support url() or none.
X
Outlook 2007-16
!
Outlook Express
Partial. Doesn't support url(), some support for CSS3 properties.
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
!
Windows Live Mail
Partial. Doesn't support url() or none.
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
!
Yahoo! Mail
Partial. Supports most CSS2 values.
The display CSS property sets whether an element is treated as a block or inline element and the layout used for its children, such as flow layout, grid or flex.<br><br> Formally, the display property sets an element's inner and outer display types. The outer type sets an element's participation in flow layout; the inner type sets the layout of children. Some values of display are fully defined in their own individual specifications; for example the detail of what happens when display: flex is declared is defined in the CSS Flexible Box Model specification.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Supports block, inline, list-item, and none.
success
Apple Mail 10
X
IBM Notes 9
!
Outlook 2000-03
Partial. Supports block, inline, list-item, and none.
!
Outlook 2007-16
Partial. Sometimes supports none.
!
Outlook Express
Partial. Supports block, inline, list-item, and none.
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Sometimes supports none.
!
Windows Live Mail
Partial. Supports block, inline, list-item, and none.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
!
AOL Alto iOS app
Partial. Sometimes supports none.
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Partial. Supports block, inline, list-item, and none.
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The float CSS property places an element on the left or right side of its container, allowing text and inline elements to wrap around it. The element is removed from the normal flow of the page, though still remaining a part of the flow (in contrast to absolute positioning).
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The left CSS property participates in specifying the horizontal position of a positioned element. It has no effect on non-positioned elements.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The object-fit CSS property sets how the content of a replaced element, such as an <img> or <video>, should be resized to fit its container.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The object-position CSS property specifies the alignment of the selected replaced element's contents within the element's box. Areas of the box which aren't covered by the replaced element's object will show the element's background.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The opacity CSS property sets the opacity of an element. Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
X
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The outline CSS shorthand property set all the outline properties in a single declaration.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The outline-color CSS property sets the color of an element's outline.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The outline-style CSS property sets the style of an element's outline. An outline is a line that is drawn around an element, outside the border.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The CSS outline-width property sets the thickness of an element's outline. An outline is a line that is drawn around an element, outside the border.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The overflow CSS shorthand property sets the desired behavior for an element's overflow &ndash; i.e. when an element's content is too big to fit in its block formatting context &ndash; in both directions.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
!
Windows Live Mail
Buggy. Elements with visible are covered by the next element.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
!
Gmail mobile webmail
Partial. Clipping works, but scrolling doesn't.
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
!
Outlook Android app
Partial. Clipping works, but scrolling doesn't.
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Buggy. Elements with visible are covered by the next element.
!
Yahoo! Mail Android app
Partial. Clipping works, but scrolling doesn't.
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The position CSS property sets how an element is positioned in a document. The top, right, bottom, and left properties determine the final location of positioned elements.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Supports relative and absolute, but not fixed.
!
Apple Mail 10
Partial. Elements with fixed scroll with the page instead of remaining fixed.
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
!
Postbox
Partial. Supports relative. Elements with fixed scroll with the page instead of remaining fixed. Buggy behavior for absolute positioning.
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
!
AOL Alto Android app
Partial. Elements with fixed scroll with the page instead of remaining fixed.
!
AOL Alto iOS app
Partial. Elements with fixed scroll with the page instead of remaining fixed.
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
!
iOS 10 Mail
Partial. Elements with fixed scroll with the page instead of remaining fixed.
!
iOS 11 Mail
Partial. Elements with fixed scroll with the page instead of remaining fixed.
success
Outlook Android app
X
Outlook iOS app
!
Sparrow
Partial. Elements with fixed scroll with the page instead of remaining fixed.
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
Supports the value relative, but not the properties top, right, bottom, or left.
The resize CSS property sets whether an element is resizable, and if so, in which direction
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
!
Android 4.4.4 Mail
Buggy. Drag handles are visible, but not functional.
!
AOL Alto Android app
Buggy. Drag handles are visible, but not functional.
X
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
X
iOS 10 Mail
X
iOS 11 Mail
!
Outlook Android app
Buggy. Drag handles are visible, but not functional.
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The right CSS property participates in specifying the horizontal position of a positioned element. It has no effect on non-positioned elements.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The top CSS property participates in specifying the vertical position of a positioned element. It has no effect on non-positioned elements.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The visibility CSS property shows or hides an element without changing the layout of a document. The property can also hide rows or columns in a <table>.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The z-index CSS property sets the z-order of a positioned element and its descendants or flex items. Overlapping elements with a larger z-index cover those with a smaller one.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The list-style CSS shorthand property allows you to set all the list style properties at once.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
!
Outlook 2007-16
Partial. Supports only the list-style-type part of the shorthand. Non-list elements with display: list-item are unsupported.
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Supports only the list-style-type part of the shorthand. Non-list elements with display: list-item are unsupported.
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The list-style-image CSS property sets an image to be used as the list item marker.<br><br> It is often more convenient to use the shorthand list-style.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
success
Yahoo! Mail
The list-style-position CSS property sets the position of the ::marker relative to a list item.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The list-style-type CSS property sets the marker (such as a disc, character, or custom counter style) of a list item element.
DESKTOP :: Email Client Support
!
AOL Desktop
Partial. Supports none, disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
success
Apple Mail 10
!
IBM Notes 9
Partial. Supports none, disc, decimal, lower-alpha, upper-alpha.
!
Outlook 2000-03
Partial. Supports none, disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
!
Outlook 2007-16
Partial. Supports disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
!
Outlook Express
Partial. Supports none, disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
success
Outlook for Mac
success
Postbox
success
Thunderbird
!
Windows 10 Mail
Partial. Supports disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
!
Windows Live Mail
Partial. Supports none, disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
!
BlackBerry
Partial. Doesn't support circle.
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
!
Windows Phone 8 Mail
Partial. Supports none, disc, circle, square, decimal, lower-alpha, upper-alpha, lower-roman, and upper-roman.
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-collapse CSS property sets whether cells inside a <table> have shared or separate borders.
DESKTOP :: Email Client Support
success
AOL Desktop
Supported, but the HTML attribute cellspacing takes precedence over it.
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
Supported, but the HTML attribute cellspacing takes precedence over it.
success
Outlook 2007-16
success
Outlook Express
Supported, but the HTML attribute cellspacing takes precedence over it.
success
Outlook for Mac
success
Postbox
success
Thunderbird
success
Windows 10 Mail
success
Windows Live Mail
Supported, but the HTML attribute cellspacing takes precedence over it.
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
Supported, but the HTML attribute cellspacing takes precedence over it.
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The border-spacing CSS property sets the distance between the borders of adjacent <table> cells. This property applies only when border-collapse is separate.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The caption-side CSS property puts the content of a table's <caption> on the specified side. The values are relative to the writing-mode of the table.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The empty-cells CSS property sets whether borders and backgrounds appear around <table> cells that have no visible content.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
success
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
success
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The table-layout CSS property sets the algorithm used to lay out <table> cells, rows, and columns.
DESKTOP :: Email Client Support
success
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
success
Outlook 2000-03
X
Outlook 2007-16
success
Outlook Express
success
Outlook for Mac
success
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
X
Gmail Android app
success
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
X
Sparrow
success
Windows Phone 8 Mail
success
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
success
Yahoo! Mail
The animation shorthand CSS property applies an animation between styles. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-delay CSS property specifies the amount of time to wait from applying the animation to an element before beginning to perform the animation. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.<br><br> If multiple values are specified, each time the animation is played the next value in the list is used, cycling back to the first value after the last one is used.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-play-state CSS property sets whether an animation is running or paused.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
success
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.
DESKTOP :: Email Client Support
X
AOL Desktop
!
Apple Mail 10
Buggy.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
!
Outlook for Mac
Buggy.
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
!
Android 4.2.2 Mail
Partial support with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
!
AOL Alto iOS app
Buggy.
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
!
iOS 10 Mail
Buggy.
!
iOS 11 Mail
Buggy.
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transform-origin CSS property sets the origin for an element's transformations.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transform-style CSS property sets whether children of an element are positioned in the 3D space or are flattened in the plane of the element.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transition-property CSS property sets the CSS properties to which a transition effect should be applied.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
success
Android 4.2.2 Mail
Supported with -webkit prefix.
success
Android 4.4.4 Mail
success
AOL Alto Android app
X
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
Supported with -webkit prefix.
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
Supported with -webkit prefix.
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
Supported with -webkit prefix.
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
Supported with -webkit prefix.
success
iOS 11 Mail
Supported with -webkit prefix.
X
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The filter CSS property applies graphical effects like blur or color shift to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.<br><br> Included in the CSS standard are several functions that achieve predefined effects. You can also reference an SVG filter with a URL to an SVG filter element.
DESKTOP :: Email Client Support
X
AOL Desktop
Supports Microsoft's proprietary filter syntax, which has some overlaps with the standard property.
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
Supports Microsoft's proprietary filter syntax, which has some overlaps with the standard property.
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
Supported with -webkit prefix.
success
AOL Alto Android app
success
AOL Alto iOS app
success
BlackBerry
Supported with -webkit prefix.
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The break-after CSS property sets how page, column, or region breaks should behave after a generated box. If there is no generated box, the property is ignored.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The break-before CSS property sets how page, column, or region breaks should behave before a generated box. If there is no generated box, the property is ignored.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The break-inside CSS property sets how page, column, or region breaks should behave inside a generated box. If there is no generated box, the property is ignored.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-count CSS property breaks an element's content into the specified number of columns.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-fill CSS property controls how an element's contents are balanced when broken into columns.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-gap CSS property sets the size of the gap (gutter) between an element's columns.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-span CSS property makes it possible for an element to span across all columns when its value is set to all.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
X
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-width CSS property sets the ideal column width in a multi-column layout. The container will have as many columns as can fit without any of them having a width less than the column-width value. If the width of the container is narrower than the specified value, the single column's width will be smaller than the declared column width.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The CSS align-items property sets the align-self value on all direct children as a group. In Flexbox, it controls the alignment of items on the Cross Axis. In Grid Layout, it controls the alignment of items on the Block Axis within their grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
success
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The display CSS property sets whether an element is treated as a block or inline element and the layout used for its children, such as flow layout, grid or flex.<br><br> Formally, the display property sets an element's inner and outer display types. The outer type sets an element's participation in flow layout; the inner type sets the layout of children. Some values of display are fully defined in their own individual specifications; for example the detail of what happens when display: flex is declared is defined in the CSS Flexible Box Model specification.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
success
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The flex CSS shorthand property sets how a flex item will grow or shrink to fit the space available in its flex container.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-basis CSS property sets the initial main size of a flex item. It sets the size of the content box unless otherwise set with box-sizing.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-direction CSS property sets how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-flow CSS shorthand property specifies the direction of a flex container, as well as its wrapping behavior.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-grow CSS property sets the flex grow factor of a flex item's main size.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-shrink CSS property sets the flex shrink factor of a flex item. If the size of all flex items is larger than the flex container, items shrink to fit according to flex-shrink.<br><br> In use, flex-shrink is used alongside the other flex properties flex-grow and flex-basis, and normally defined using the flex shorthand.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The flex-wrap CSS property sets whether flex items are forced onto one line or can wrap onto multiple lines. If wrapping is allowed, it sets the direction that lines are stacked.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
X
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The CSS justify-content property defines how the browser distributes space between and around content items along the main-axis of a flex container, and the inline axis of a grid container.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The order CSS property sets the order to lay out an item in a flex or grid container. Items in a container are sorted by ascending order value and then by their source code order.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
success
Android 4.4.4 Mail
X
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The CSS align-items property sets the align-self value on all direct children as a group. In Flexbox, it controls the alignment of items on the Cross Axis. In Grid Layout, it controls the alignment of items on the Block Axis within their grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The display CSS property sets whether an element is treated as a block or inline element and the layout used for its children, such as flow layout, grid or flex.<br><br> Formally, the display property sets an element's inner and outer display types. The outer type sets an element's participation in flow layout; the inner type sets the layout of children. Some values of display are fully defined in their own individual specifications; for example the detail of what happens when display: flex is declared is defined in the CSS Flexible Box Model specification.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
success
Gmail Android app
X
Gmail Android IMAP
success
Gmail iOS app
success
Gmail mobile webmail
X
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
success
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
success
G Suite
success
Gmail
success
Google Inbox
success
Outlook.com
X
Yahoo! Mail
The grid CSS property is a shorthand property that sets all of the explicit and implicit grid properties in a single declaration.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-area CSS shorthand property specifies a grid item’s size and location within a grid by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-auto-columns CSS property specifies the size of an implicitly-created grid column track or pattern of tracks.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-auto-flow CSS property controls how the auto-placement algorithm works, specifying exactly how auto-placed items get flowed into the grid.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-auto-rows CSS property specifies the size of an implicitly-created grid row track or pattern of tracks.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-column CSS shorthand property specifies a grid item's size and location within a grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
success
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-column-end CSS property specifies a grid item’s end position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the block-end edge of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The column-gap CSS property sets the size of the gap (gutter) between an element's columns.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-column-start CSS property specifies a grid item’s start position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement. This start position defines the block-start edge of the grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The gap CSS property sets the gaps (gutters) between rows and columns. It is a shorthand for row-gap and column-gap.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-row CSS shorthand property specifies a grid item’s size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-row-end CSS property specifies a grid item’s end position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-end edge of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The row-gap CSS property sets the size of the gap (gutter) between an element's grid rows.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-row-start CSS property specifies a grid item’s start position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start edge of its grid area.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-template-areas CSS property specifies named grid areas, establishing the cells in the grid and assigning them names.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-template-columns CSS property defines the line names and track sizing functions of the grid columns.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The grid-template-rows CSS property defines the line names and track sizing functions of the grid rows.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The CSS justify-content property defines how the browser distributes space between and around content items along the main-axis of a flex container, and the inline axis of a grid container.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The CSS justify-items property defines the default justify-self for all items of the box, giving them all a default way of justifying each box along the appropriate axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
The <a href="https://developer.mozilla.org/en-US/docs/Web/CSS" target="_self">CSS</a> justify-self property sets the way a box is justified inside its alignment container along the appropriate axis.
DESKTOP :: Email Client Support
X
AOL Desktop
success
Apple Mail 10
X
IBM Notes 9
X
Outlook 2000-03
X
Outlook 2007-16
X
Outlook Express
success
Outlook for Mac
X
Postbox
success
Thunderbird
X
Windows 10 Mail
X
Windows Live Mail
MOBILE :: Email Client Support
X
Android 4.2.2 Mail
X
Android 4.4.4 Mail
success
AOL Alto Android app
success
AOL Alto iOS app
X
BlackBerry
X
Gmail Android app
X
Gmail Android IMAP
X
Gmail iOS app
X
Gmail mobile webmail
X
Google Inbox Android app
X
Google Inbox iOS app
success
iOS 10 Mail
success
iOS 11 Mail
success
Outlook Android app
X
Outlook iOS app
success
Sparrow
X
Windows Phone 8 Mail
X
Yahoo! Mail Android app
X
Yahoo! Mail iOS app
WEB :: Email Client Support
success
AOL Mail
X
G Suite
X
Gmail
X
Google Inbox
X
Outlook.com
X
Yahoo! Mail
Note: Special thanks to the folks at WaSP and Campaign Monitor for their Ultimate Guide to CSS breaking down a host of the nitty-gritty with respect to CSS support for many popular mobile, web, and desktop email clients and for their creation of the Email Standards Project.

The strength, accuracy, and thorough consideration baked into the algorithm behind this validator are each and equally directly proportional to the diligence and care these organizations have exercised in the pursuit of their craft.
CRNRSTN :: v2.00.0000 PRE-ALPHA-DEV
J5 Wolf Pup