On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 43 on 2015-05-19
In Chrome Android version 43 on 2015-05-27
In Edge version 12 on 2015-07-29
In Firefox version 16 on 2012-10-09
In Firefox for Android version 16 on 2012-10-09
In Internet Explorer version 10 on 2012-10-26
In Quest Browser version 5.0 on undefined
In Opera version 30 on 2015-06-09
In Opera Android version 30 on 2015-06-10
In Safari version 9 on 2015-09-30
In Safari on iOS version 9 on 2015-09-16
In Samsung Internet version 4.0 on 2016-03-11
In WebView Android version 43 on 2015-05-27 Note: The animation-fill-mode property is not supported in Android browsers below 2.3.
In WebView on iOS version 9 on 2015-09-16