[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [StyleSheetChangedEvent](./puppeteer.protocol.css.stylesheetchangedevent.md) ## Protocol.CSS.StyleSheetChangedEvent interface Fired whenever a stylesheet is changed as a result of the client operation. Signature: ```typescript export interface StyleSheetChangedEvent ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [styleSheetId](./puppeteer.protocol.css.stylesheetchangedevent.stylesheetid.md) | [StyleSheetId](./puppeteer.protocol.css.stylesheetid.md) | |