CSSRule: parentStyleSheet property
        
        
          
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      This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The parentStyleSheet property of the
CSSRule interface returns the StyleSheet object in which
the current rule is defined.
Value
A StyleSheet object.
Examples
js
const docRules = document.styleSheets[0].cssRules;
console.log(docRules[0].parentStyleSheet === document.styleSheets[0]); // returns true
Specifications
| Specification | 
|---|
| CSS Object Model (CSSOM)> # dom-cssrule-parentstylesheet> | 
Browser compatibility
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