CSS 3 Generator
CSS 3 Generator : that helps you understand the new CSS 3 features in Webkit with an interactive tool that will build up and show how each new property affects an element.
It simply lets you to choose the rule from a list that includes:
- order radius
- box shadow
- text shadow
- multiple columns
- box resize
- box sizing
and customize them while previewing the outputs instantly.
Website : http://css3generator.com/