1. Dart
2. dart:html
3. CssStyleSheet
4. insertRule method

##### CssStyleSheet class

1. Properties
2. cssRules
3. disabled
4. hashCode
5. href
6. media
7. ownerNode
8. ownerRule
9. parentStyleSheet
10. rules
11. runtimeType
12. title
13. type
14. Methods
15. addRule
16. deleteRule
17. insertRule
18. noSuchMethod
19. removeRule
20. toString
21. Operators
22. operator ==

description

# insertRule method Null safety

int insertRule (

1. String rule,
2. [int? index]

)

## Implementation

    int insertRule(String rule, [int? index]) native;