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Baseline Widely available
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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.

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.

CSSRule CSSGroupingRule CSSConditionRule

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

See also