Twitter Bootstrap
Simple and flexible HTML, CSS, and Javascript for popular user interface components and interactions.
Designed for everyone, everywhere.
Built for and by nerds
We love building awesome products on the web just like you, so we made Bootstrap. No matter your skill level, use it as a complete kit or use to start something more complex.
Cross-everything
Originally built with only modern browsers in mind, Bootstrap has evolved to include support for all major browsers (even IE7!) and, with Bootstrap 2, tablets and smartphones, too.
12-column grid
Grid systems aren't everything, but having a durable and flexible one at the core of your work can make development much simpler. Use our built-in grid classes or roll your own.
Responsive design
Beginning with Bootstrap 2, components are scaled according to a range of resolutions and devices to provide a consistent experience, no matter what.
Living, coded examples
Bootstrap was designed first and foremost as a way to document not only the code of our components, but the visual and interaction design through live examples.
Growing library
Despite being only 10kb (gzipped), Bootstrap is one of the most complete front-end toolkits out there with dozens of fully functional components ready to be put to use.
Custom jQuery plugins
Easy-to-use, proper, and extensible interactions for many of our components with custom-built jQuery plugins to quickly bring any project to life.
Built on LESS
Where vanilla CSS falters, LESS excels. Variables, nesting, operations, and mixins in LESS makes coding CSS faster and more efficient with minimal overhead.
