1. Dart
2. dart:html
3. CssKeyframesRule
4. appendRule method

##### CssKeyframesRule class

1. Properties
2. cssRules
3. cssText
4. hashCode
5. name
6. parentRule
7. parentStyleSheet
8. runtimeType
9. type
10. Methods
11. appendRule
12. deleteRule
13. findRule
14. noSuchMethod
15. toString
16. Operators
17. operator ==

description

# appendRule method Null safety

void appendRule (

1. String rule

)

## Implementation

    void appendRule(String rule) native;