bootstrap

Bootstrap is the most popular front-end framework for developing responsive, mobile-first projects on the web. The default branch focuses on Bootstrap 5 development, while the v4-dev branch holds the previous major release. ## Quick start Several installation paths are available: - Download the latest release zip from GitHub - Clone the repository with git - Install via npm, yarn, or Bun (`bootstrap@v5.3.8`) - Install via Composer (`twbs/bootstrap:5.3.8`) or NuGet (`bootstrap` for CSS, `bootstrap.sass` for Sass) ## What's included Distributable files include compiled and minified CSS and JavaScript: full bootstrap.css/js, grid-only, reboot, and utilities builds, plus RTL variants. Source maps are included for browser debugging. The bundled JS files also include Popper for positioning popovers and dropdowns. ## Documentation The docs are built with Astro and hosted at getbootstrap.com. Search is powered by Algolia DocSearch. To run locally, run `npm install`, rebuild assets with `npm run test`, then serve via `npm run docs-serve` at localhost:9001. Docs for previous releases are available through the versions page. ## Community and contributing Contributors are asked to follow the contributing guidelines, include unit tests for JavaScript patches, and conform to the Code Guide. Community activity happens on X (@getbootstrap), the official blog, GitHub Discussions, Discord, Reddit, IRC (#bootstrap on Libera.Chat), and Stack Overflow using the bootstrap-5 tag. ## Versioning Bootstrap follows Semantic Versioning for its release cycle. Changelogs per release are listed in the GitHub Releases section, and notable changes are summarized on the official blog. ## Creators and license Bootstrap was created by Mark Otto and Jacob Thornton. Code is released under the MIT License; documentation is released under Creative Commons BY 3.0. The project acknowledges support from BrowserStack and Netlify, and accepts sponsorship through Open Collective.