[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [CreateStyleSheetRequest](./puppeteer.protocol.css.createstylesheetrequest.md) > [frameId](./puppeteer.protocol.css.createstylesheetrequest.frameid.md) ## Protocol.CSS.CreateStyleSheetRequest.frameId property Identifier of the frame where "via-inspector" stylesheet should be created. Signature: ```typescript frameId: Page.FrameId; ```