The CSS3 Test is a web-based test utility for check CSS3 properties which are supported by the browser being used.
It checks many features like backgrounds/borders, transitions, media queries, fonts, animations and much more.
You may also check:
Multiple testcases are ran on each element and this can be displayed by simply clicking to items.
The application is a must-bookmark to quickly check the issues on each property for shaping our styles accordingly.