98.css : 98.css is a CSS library for building interfaces that look like Windows 98.
Styletron : Styletron is a universal CSS-in-JS engine built from the ground up for high-performance.
Normalize.css : A modern, HTML5-ready alternative to CSS resets
Normalize.css makes browsers render all elements more consistently and in line with modern standards. ...
Photon : UI toolkit for building desktop apps with Electron.
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
