#import #import #import #import // https://drafts.csswg.org/cssom/#cssstylesheet [Exposed=Window] interface CSSStyleSheet : StyleSheet { constructor(optional CSSStyleSheetInit options = {}); readonly attribute CSSRule? ownerRule; [SameObject] readonly attribute CSSRuleList cssRules; unsigned long insertRule(CSSOMString rule, optional unsigned long index = 0); undefined deleteRule(unsigned long index); Promise replace(USVString text); undefined replaceSync(USVString text); // https://drafts.csswg.org/cssom/#legacy-css-style-sheet-members [SameObject, ImplementedAs=css_rules] readonly attribute CSSRuleList rules; long addRule(optional DOMString selector = "undefined", optional DOMString style = "undefined", optional unsigned long index); undefined removeRule(optional unsigned long index); }; dictionary CSSStyleSheetInit { DOMString baseURL = null; (MediaList or DOMString) media = ""; boolean disabled = false; };