This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The CSSKeyframeRule interface describes an object representing a set of style for a given keyframe. It corresponds to the contains of a single keyframe of a @keyframes at-rule. It implements the CSSRule interface with a type value of 8 (CSSRule.KEYFRAME_RULE).
Properties
As a CSSRule, CSSKeyframeRule also implements the properties of these interfaces. It has two specific properties:
CSSKeyframe.keyText- Represents the key of the keyframe, like
'10%','75%'. Thefromkeyword maps to'0%'and thetokeyword maps to'100%'. CSSKeyframe.styleRead only- Returns a
CSSStyleDeclarationof the CSS style associated with the keyfrom.
Methods
As a CSSRule, CSSKeyframeRule also implements the methods of that interface. It has no specific methods.
Specification
| Specification | Status | Comment |
|---|---|---|
| CSS Animations The definition of 'CSSKeyframeRule' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 5.0 (5.0) -moz 48 (48) |
10 | 12 -o 12.50[1] |
4.0 |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 5.0 (5.0) -moz 48 (48) |
? | ? | ? |
[1] See the blog post to Opera 12.50.

