Twitter introduced Bootstrap recently, a library of CSS styles aimed at web app developers in need of some design help. The toolkit includes everything from grid layouts down to buttons and modals, and works on pretty much all modern browsers, all the way back to IE7. Bootstrap is designed to help people of all skill levels—designer or developer, huge nerd or early beginner. Use it as a complete kit or use to start something more complex. With the version 2, Bootsrap has gone fully responsive. Their components are scaled according to a range of resolutions and devices to provide a consistent experience, no matter what.
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