[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [CSSStyleSheetHeader](./puppeteer.protocol.css.cssstylesheetheader.md) > [isConstructed](./puppeteer.protocol.css.cssstylesheetheader.isconstructed.md) ## Protocol.CSS.CSSStyleSheetHeader.isConstructed property Whether this stylesheet is a constructed stylesheet (created using new CSSStyleSheet()). Signature: ```typescript isConstructed: boolean; ```