Kupferwerk

Sprite Cow - Generate CSS for sprite sheets

Full Browser Width Bars | CSS-Tricks

Yet another useful thing that pseudo elements can do for us: allow us to create full browser width header bars without using internal non-semantic wrappers.

Play Sound on :hover | CSS-Tricks

Use JavaScript to trigger the playing of a sound (an HTML5 audio element). A couple of ways to do it are presented here, along with a few gotchas to watch for.

Guide to CSS support in email clients - Articles & Tips - Campaign Monitor