---
sidebar_label: Coverage.startCSSCoverage
# Coverage.startCSSCoverage() method
**Signature:**
```typescript
class Coverage {
startCSSCoverage(options?: CSSCoverageOptions): Promise<void>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- |
| options | [CSSCoverageOptions](./puppeteer.csscoverageoptions.md) | <i>(Optional)</i> Set of configurable options for coverage, defaults to <code>resetOnNavigation : true</code> |
**Returns:**
Promise<void>
Promise that resolves when coverage is started.
