Bootstrap · The world's most popular mobile-first and responsive front-end framework.
bootstrap, a sleek, intuitive, and powerful mobile first front-end framework for faster and easier web development.
A cross-browser library of CSS animations. As easy to use as an easy thing.
Material Design Lite Components in HTML/CSS/JS
Material Design Lite a front-end template that helps you build fast, modern mobile web apps.
Materialize, a CSS Framework based on Material Design
Documentation - Materialize materialize is a modern responsive css framework based on material design by google.
Ratchet ratchet: build mobile apps with simple html, css, and js components.
A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
Hover.css - A collection of CSS3 powered hover effects
A CSS framework that aims to cut down on your CSS development time
CSS for clean and fast web apps
Powerful, scalable, Sass-based, BEM, OOCSS framework.
Create powerful mobile apps with just HTML, CSS, and Zepto.js (or jQuery).