Bootstrap, from Twitter

Bootstrap is a toolkit from Twitter designed to kickstart development of webapps and sites.
It includes base CSS and HTML for typography, forms, buttons, tables, grids, navigation, and more.

Nerd alert: Bootstrap is built with Less and was designed to work out of the gate with modern browsers in mind.


Engineers at Twitter have historically used almost any library they were familiar with to meet front-end requirements. Bootstrap began as an answer to the challenges that presented. With the help of many awesome folks, Bootstrap has grown significantly.

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Browser support

Bootstrap is tested and supported in major modern browsers like Chrome, Safari, Internet Explorer, and Firefox.

Tested and supported in Chrome, Safari, Internet Explorer, and Firefox
  • Latest Safari
  • Latest Google Chrome
  • Firefox 4+
  • Internet Explorer 7+
  • Opera 11

What's included

Bootstrap comes complete with compiled CSS, uncompiled, and example templates.

Quick-start examples

Need some quick templates? Check out these basic examples we've put together:

  • Simple three-column layout with hero unit
  • Fluid layout with static sidebar
  • Simple hanging container for apps