Copy pageCopy pageCopy this page as Markdown for LLMsView as MarkdownView this page as plain textOpen in ClaudeAsk questions about this pageOpen in ChatGPTAsk questions about this pageOn this pageCSSStyleDeclaration-1CSSStyleDeclaration: {(): CSSStyleDeclaration; prototype: CSSStyleDeclaration;}; Type Declaration Returns CSSStyleDeclaration prototype prototype: CSSStyleDeclaration;