[Home](./index.md) > [puppeteer](./puppeteer.md) > [Coverage](./puppeteer.coverage.md) > [startCSSCoverage](./puppeteer.coverage.startcsscoverage.md) ## Coverage.startCSSCoverage() method Signature: ```typescript startCSSCoverage(options?: { resetOnNavigation?: boolean; }): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | options | { resetOnNavigation?: boolean; } | | Returns: Promise<void>