CSSSupportsRule

The CSSSupportsRule interface represents a single CSS @supports at-rule.

Properties

Inherits properties from its ancestors CSSConditionRule, CSSGroupingRule, and CSSRule.

Methods

Inherits methods from its ancestors CSSConditionRule, CSSGroupingRule, and CSSRule.

Examples

The CSS includes a CSS feature query using the @supports at-rule, containing one style rule. This will be the first CSSRule returned by document.styleSheets[0].cssRules. myRules[0] therefore returns a CSSSupportsRule object.

@supports (display: grid) {
  body {
    color: blue;
  }
}
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); // a CSSSupportsRule representing the feature query.

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
CSSSupportsRule
28
12
22
No
12.1
9
≤37
28
22
15
12.1-14
9
1.5

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CSSSupportsRule