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An object implementing the CSSConditionRule interface represents a single condition CSS at-rule, which consists of a condition and a statement block. It is a child of CSSGroupingRule.

Two objects derive from it : CSSMediaRule and CSSSupportsRule.


The syntax is described using the WebIDL format.

interface CSSConditionRule : CSSGroupingRule {
    attribute DOMString conditionText;


The CSSConditionRule derives from CSSRule, CSSGroupingRule and inherits all properties of these classes. It has one specific property:

Represents the text of the condition of the rule.


The CSSConditionRule derives from CSSRule, CSSGroupingRule and inherits all methods of these classes. It has no specific property of its own.


Specification Status Comment
CSS Conditional Rules Module Level 3
The definition of 'CSSConditionRule' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support56 Yes20 No43 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5656 Yes2043 ? ?

See also


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