CSSSupportsRule
The CSSSupportsRule
interface represents a single CSS @supports at-rule.
Properties
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The read-only conditionText
property of the CSSConditionRule interface returns or sets the text of the CSS rule.
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The cssRules
property of the a collection of CSSRule objects.
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The parentRule
property of the CSSRule interface returns the containing rule of the current rule if this exists, or otherwise returns null.
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The parentStyleSheet
property of the the current rule is defined.