[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [TakeCoverageDeltaResponse](./puppeteer.protocol.css.takecoveragedeltaresponse.md) ## Protocol.CSS.TakeCoverageDeltaResponse interface Signature: ```typescript export interface TakeCoverageDeltaResponse ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [coverage](./puppeteer.protocol.css.takecoveragedeltaresponse.coverage.md) | [RuleUsage](./puppeteer.protocol.css.ruleusage.md)\[\] | | | [timestamp](./puppeteer.protocol.css.takecoveragedeltaresponse.timestamp.md) | number | Monotonically increasing time, in seconds. |