About

Bootstrap is maintained by a on GitHub. We’re actively looking to grow this team and would love to hear from you if you’re excited about CSS at scale, writing and maintaining vanilla JavaScript plugins, and improving build tooling processes for frontend code.

Bootstrap was created at Twitter in mid-2010 by @mdo and . Prior to being an open-sourced framework, Bootstrap was known as Twitter Blueprint. A few months into development, Twitter held its first Hack Week and the project exploded as developers of all skill levels jumped in without any external guidance. It served as the style guide for internal tools development at the company for over a year before its public release, and continues to do so today.

With Bootstrap 4, we once again rewrote the project to account for two key architectural changes: a migration to Sass and the move to CSS’s flexbox. Our intention is to help in a small way to move the web development community forward by pushing for newer CSS properties, fewer dependencies, and new technologies across more modern browsers.