CSS Wand is a library of handful CSS-based animations that you can simply copy-paste and customize on your site. This includes buttons, inputs, or other loading animations that are fancy and simple.
Woah.css CSS animation library for the coolest web developers that love anything eccentric.
“Animation Library” is a pure CSS library. Great library for developers who want to use some animations for more professional websites.
vov.css is a awesome pure CSS animations library that covers every animation you might want. Just add a class and enjoy!