Selectivizr : CSS3 pseudo-class and attribute selectors for IE 6-8
polyfill : polyfill makes web development less frustrating by selectively polyfilling just what the browser needs. Use it on your own site, or as a service.
Styletron : Styletron is a universal CSS-in-JS engine built from the ground up for high-performance.
jQuery Masonry : A dynamic layout plugin for jQuery
The flip-side of CSS floats
Anime.js : Anime.js is a fast, multipurpose and lightweight JavaScript animation library with a simple, yet powerful API.
It works with CSS properties, SVG, DOM ...
