Browser CSS Selector Test

This browser selector test will check how well your browser supports the CSS selectors from level 1 up to the upcoming level 4.

After you started the test-suit which is based on the working draft, it will automatically check which selectors are supported by your browser, not necessarily if your browser implemented it correctly according to the specification. Please note that the specification isn't finalized yet, so the CSS selector (level 4) support is increasing at the moment, the browser fabricators are constantly working on implementing new or changed parts of the specification.