This website is designed to help you build modern sites that are able to make use of some of the newer, exciting parts of CSS.
The site is currently focussed on CSS Transitions, Transforms and Animation, though I will be adding other topics as they become avaliable on any major platform.
Though of course your browser must support the technologies to use them, most things degrade nicely in older browser, meaning that you can use much of this today, even without a fallback. If you need to have the same appearance in older browsers (mainly IE6, 7 and 8), then all the animation bits can be easily covered by using jQuery's .animate(). 2D transforms can be emulated to a degree in older versions of IE, but 3D transforms can't.
If you are using a touch enabled device, replace hover with touch and hold wherever appropriate. (Check the script in the head if you are wondering how to replicate that effect.)