CSSStyleSheet.deleteRule()
 The CSSStyleSheet method deleteRule() removes a rule from the stylesheet object. 
Syntax
cssStyleSheet.deleteRule(index)
Parameters
- index
-  The index into the stylesheet's CSSRuleListindicating the rule to be removed.
Return value
undefined
Example
This example removes the first rule from the stylesheet myStyles.
myStyles.deleteRule(0);
Specifications
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
| deleteRule | 1 | 12 | 1 | 9 | ≤12.1 | 1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
See also
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    https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet/deleteRule