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CSSConditionRule

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This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

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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.

Three objects derive from CSSConditionRule: CSSMediaRule, CSSContainerRule and CSSSupportsRule.

Instance properties

Inherits properties from its ancestors CSSGroupingRule and CSSRule.

CSSConditionRule.conditionText Read only: Represents the text of the condition of the rule.

Instance methods

Inherits methods from its ancestors CSSGroupingRule and CSSRule.

Specifications

Specification
CSS Conditional Rules Module Level 3 # the-cssconditionrule-interface

Browser compatibility

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This page was last modified on Nov 7, 2025 by MDN contributors.

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