Hover.css is an interesting project that is available to contribute to on GitHub. This library is a collection of different CSS effects that be applied to single elements.
The project effects are self contained pieces of CSS that can be used freely in your next project. It also comes in Sass or LESS if you prefer, making it inherit or expand in your own projects.
An example of the effects available are:
- Background transitions
- Icon transitions
- Border transitions
- Shadow transitions
- Speech arrows
- Corner curls