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 CSSStyleProperties object for the rule, which represents its styles.

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

Getting a style rule

The CSS below defines the style rule for the h1 selector, which is represented in code by a CSSStyleRule instance.

css
h1 {
  color: pink;
}

Assuming the above style rule is the first rule in the document, it will be the first CSSRule returned by document.styleSheets[0].cssRules. myRules[0].style returns a CSSStyleProperties object representing the declarations defined for h1.

js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); // a CSSStyleRule representing the h1.

Specifications

Specification
CSS Object Model (CSSOM)
# the-cssstylerule-interface

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
Chrome – Full support
Chrome 1 (Release date: 2008-12-11)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 1 (Release date: 2004-11-09)
footnote Full support
Opera – Full support
Opera 12.1 (Release date: 2012-11-20)
footnote Full support
Safari – Full support
Safari 1 (Release date: 2003-06-23)
footnote Full support
Chrome Android – Full support
Chrome Android 18 (Release date: 2012-06-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 12.1 (Release date: 2012-10-09)
footnote Full support
Safari on iOS – Full support
Safari on iOS 1 (Release date: 2007-06-29)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1 (Release date: 2013-04-27)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 1 (Release date: 2007-06-29)
footnote Full support
cssRules
Chrome – Full support
Chrome 112 (Release date: 2023-04-04)
footnote Full support
Edge – Full support
Edge 112 (Release date: 2023-04-06)
footnote Full support
Firefox – Full support
Firefox 117 (Release date: 2023-08-29)
footnote Full support
Opera – Full support
Opera 98 (Release date: 2023-04-20)
footnote Full support
Safari – Full support
Safari 16.5 (Release date: 2023-05-18)
footnote Full support
Chrome Android – Full support
Chrome Android 112 (Release date: 2023-04-04)
footnote Full support
Firefox for Android – Full support
Firefox for Android 117 (Release date: 2023-08-29)
footnote Full support
Opera Android – Full support
Opera Android 75 (Release date: 2023-05-17)
footnote Full support
Safari on iOS – Full support
Safari on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
Samsung Internet – Full support
Samsung Internet 23 (Release date: 2023-10-18)
footnote Full support
WebView Android – Full support
WebView Android 112 (Release date: 2023-04-04)
footnote Full support
WebView on iOS – Full support
WebView on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
deleteRule
Chrome – Full support
Chrome 112 (Release date: 2023-04-04)
footnote Full support
Edge – Full support
Edge 112 (Release date: 2023-04-06)
footnote Full support
Firefox – Full support
Firefox 117 (Release date: 2023-08-29)
footnote Full support
Opera – Full support
Opera 98 (Release date: 2023-04-20)
footnote Full support
Safari – Full support
Safari 16.5 (Release date: 2023-05-18)
footnote Full support
Chrome Android – Full support
Chrome Android 112 (Release date: 2023-04-04)
footnote Full support
Firefox for Android – Full support
Firefox for Android 117 (Release date: 2023-08-29)
footnote Full support
Opera Android – Full support
Opera Android 75 (Release date: 2023-05-17)
footnote Full support
Safari on iOS – Full support
Safari on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
Samsung Internet – Full support
Samsung Internet 23 (Release date: 2023-10-18)
footnote Full support
WebView Android – Full support
WebView Android 112 (Release date: 2023-04-04)
footnote Full support
WebView on iOS – Full support
WebView on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
insertRule
Chrome – Full support
Chrome 112 (Release date: 2023-04-04)
footnote Full support
Edge – Full support
Edge 112 (Release date: 2023-04-06)
footnote Full support
Firefox – Full support
Firefox 117 (Release date: 2023-08-29)
footnote Full support
Opera – Full support
Opera 98 (Release date: 2023-04-20)
footnote Full support
Safari – Full support
Safari 16.5 (Release date: 2023-05-18)
footnote Full support
Chrome Android – Full support
Chrome Android 112 (Release date: 2023-04-04)
footnote Full support
Firefox for Android – Full support
Firefox for Android 117 (Release date: 2023-08-29)
footnote Full support
Opera Android – Full support
Opera Android 75 (Release date: 2023-05-17)
footnote Full support
Safari on iOS – Full support
Safari on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
Samsung Internet – Full support
Samsung Internet 23 (Release date: 2023-10-18)
footnote Full support
WebView Android – Full support
WebView Android 112 (Release date: 2023-04-04)
footnote Full support
WebView on iOS – Full support
WebView on iOS 16.5 (Release date: 2023-05-18)
footnote Full support
selectorText
Chrome – Full support
Chrome 1 (Release date: 2008-12-11)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 1 (Release date: 2004-11-09)
footnote Full support
Opera – Full support
Opera 12.1 (Release date: 2012-11-20)
footnote Full support
Safari – Full support
Safari 1 (Release date: 2003-06-23)
footnote Full support
Chrome Android – Full support
Chrome Android 18 (Release date: 2012-06-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 12.1 (Release date: 2012-10-09)
footnote Full support
Safari on iOS – Full support
Safari on iOS 1 (Release date: 2007-06-29)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1 (Release date: 2013-04-27)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 1 (Release date: 2007-06-29)
footnote Full support
style
Chrome – Full support
Chrome 1 (Release date: 2008-12-11)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 1 (Release date: 2004-11-09)
footnote Full support
Opera – Full support
Opera 12.1 (Release date: 2012-11-20)
footnote Full support
Safari – Full support
Safari 1 (Release date: 2003-06-23)
footnote Full support
Chrome Android – Full support
Chrome Android 18 (Release date: 2012-06-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 12.1 (Release date: 2012-10-09)
footnote Full support
Safari on iOS – Full support
Safari on iOS 1 (Release date: 2007-06-29)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1 (Release date: 2013-04-27)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 1 (Release date: 2007-06-29)
footnote Full support
Returns CSSStyleProperties (not CSSStyleDeclaration)
Chrome – No support
Chrome
footnote No support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 145 (Release date: 2025-11-11)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 26 (Release date: 2025-09-15)
footnote Full support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – Full support
Firefox for Android 145 (Release date: 2025-11-11)
footnote Full support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 26 (Release date: 2025-09-15)
footnote Full support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – Full support
WebView on iOS 26 (Release date: 2025-09-15)
footnote Full support
styleMap
Chrome – Full support
Chrome 66 (Release date: 2018-04-17)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote
footnote See bug 1278697
Opera – Full support
Opera 53 (Release date: 2018-05-10)
footnote Full support
Safari – Full support
Safari 16.4 (Release date: 2023-03-27)
footnote Full support
Chrome Android – Full support
Chrome Android 66 (Release date: 2018-04-17)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote
footnote See bug 1278697
Opera Android – Full support
Opera Android 47 (Release date: 2018-07-23)
footnote Full support
Safari on iOS – Full support
Safari on iOS 16.4 (Release date: 2023-03-27)
footnote Full support
Samsung Internet – Full support
Samsung Internet 9 (Release date: 2018-09-15)
footnote Full support
WebView Android – Full support
WebView Android 66 (Release date: 2018-04-17)
footnote Full support
WebView on iOS – Full support
WebView on iOS 16.4 (Release date: 2023-03-27)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.