CSSSupportsRule
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.
The CSSSupportsRule interface represents a single CSS @supports at-rule.
Instance properties
Inherits properties from its ancestors CSSConditionRule, CSSGroupingRule, and CSSRule.
Instance 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.
css
@supports (display: grid) { body { color: blue; } } js
let myRules = document.styleSheets[0].cssRules; console.log(myRules[0]); // a CSSSupportsRule representing the feature query. Specifications
| Specification |
|---|
| CSS Conditional Rules Module Level 3 # the-csssupportsrule-interface |