This article contains a collection of some of the top easy-to-use CSS libraries to add effects and animations in your web page.
If you are looking to animate a loading event, this library is the right one. It provides very cool spin animations.
site: https://github.com/h5bp/Effeckt.css tooltip library
Transitions and CSS animations made easy with this library. From button to modals a complete tool that worth a try.
Perspective, rotation, sliders and jumps are only some of the CSS3 “magic” animations available.
Shake your DOM elements with CSSShake. A bunch of simple funny effects.