This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
CSS Animations is a module of CSS that defines how to animate the values of CSS properties over time, using keyframes. The behavior of these keyframe animations can be controlled by specifying their duration, their number of repetitions, and how they repeat.
- Detecting CSS animation support
- Describes a technique for detecting if the browser supports CSS animations.
- Using CSS animations
- Step-by-step tutorial about how to create animations using CSS, this article describes each relevant CSS property and at-rule and explains how they interact.
|CSS Animations||Working Draft||Initial definition.|
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari (WebKit)|
|Feature||Android||Firefox Mobile (Gecko)||IE Phone||Opera Mobile||Safari Mobile|
|Basic support||2.1 -webkit 
 Partial support:
animation-fill-mode property is not supported in Android browser below 2.3.
 See the release notes to Opera 12.50.
- Related to CSS Animations, CSS Transitions can trigger animations on user actions.