W3cubDocs

/Web APIs

CSSStyleRule

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

* Some parts of this feature may have varying levels of support.

The CSSStyleRule interface represents a single CSS style rule.

CSSRule CSSGroupingRule CSSStyleRule

Instance properties

Inherits properties from its ancestors CSSGroupingRule and CSSRule.

CSSStyleRule.selectorText

Returns the textual representation of the selector for this rule, e.g., "h1, h2".

CSSStyleRule.style Read only

Returns the CSSStyleDeclaration object for the rule.

CSSStyleRule.styleMap Read only

Returns a StylePropertyMap object which provides access to the rule's property-value pairs.

Instance methods

Inherits methods from its ancestors CSSGroupingRule and CSSRule.

Examples

The CSS includes one style rule. This will be the first CSSRule returned by document.styleSheets[0].cssRules. myRules[0] therefore returns a CSSStyleRule object representing the rule defined for h1.

h1 {
  color: pink;
}
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); // a CSSStyleRule representing the h1.

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
CSSStyleRule 1 12 1 ≤12.1 1 18 4 ≤12.1 1 1.0 4.4 1
cssRules 112 112 117 98 16.5 112 117 75 16.5 23.0 112 16.5
deleteRule 112 112 117 98 16.5 112 117 75 16.5 23.0 112 16.5
insertRule 112 112 117 98 16.5 112 117 75 16.5 23.0 112 16.5
selectorText 1 12 1 ≤12.1 1 18 4 ≤12.1 1 1.0 4.4 1
style 1 12 1 ≤12.1 1 18 4 ≤12.1 1 1.0 4.4 1
styleMap 66 79 No 53 16.4 66 No 47 16.4 9.0 66 16.4

© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleRule