The most popular front-end framework for developing responsive, mobile first projects on the web.
Bootstrap is a powerful front-end framework for faster and easier web development. It includes HTML, CSS, and JavaScript components for building responsive and mobile-first websites.
Responsive Grid System
Bootstrap's grid system allows you to create responsive layouts that adapt to the screen size of devices.
<div class='container'>
<div class='row'>
<div class='col-md-4'>.col-md-4</div>
<div class='col-md-4'>.col-md-4</div>
<div class='col-md-4'>.col-md-4</div>
</div>
</div>Pre-styled Components
Bootstrap provides a wide range of pre-styled components such as buttons, forms, modals, etc., that can be easily customized and used in web projects.
<button type='button' class='btn btn-primary'>Primary Button</button>JavaScript Plugins
Bootstrap comes with several jQuery plugins that add interactive features such as modals, dropdowns, and carousels.
<script>
$(document).ready(function(){
$('#myModal').modal('toggle');
});
</script>Utility Classes
Bootstrap includes utility classes for spacing, text alignment, display properties, and more, which help in fine-tuning the layout and design.
<div class='text-center mt-3 mb-4'>Centered text with margin top and bottom</div>Foundation is a responsive front-end framework similar to Bootstrap but with a more semantic approach to the grid system and components.
Bulma is a modern CSS framework based on Flexbox. It is lightweight compared to Bootstrap as it doesn't include JavaScript components.
Tailwind CSS is a utility-first CSS framework that provides low-level utility classes to build custom designs without writing CSS from scratch. It differs from Bootstrap's component-based approach.
Semantic UI is a development framework that helps create beautiful, responsive layouts using human-friendly HTML. It offers a different philosophy with a focus on semantics and readability.
UIkit is a lightweight and modular front-end framework for developing fast and powerful web interfaces. It offers a comprehensive collection of HTML, CSS, and JS components which are simple to use, easy to customize, and extendable.
Sleek, intuitive, and powerful front-end framework for faster and easier web development.
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Our default branch is for development of our Bootstrap 5 release. Head to the v4-dev branch to view the readme, documentation, and source code for Bootstrap 4.
Several quick start options are available:
git clone https://github.com/twbs/bootstrap.gitnpm install bootstrap@v5.3.0-alpha3yarn add bootstrap@v5.3.0-alpha3composer require twbs/bootstrap:5.3.0-alpha3Install-Package bootstrap Sass: Install-Package bootstrap.sassRead the Getting started page for information on the framework contents, templates, examples, and more.
Within the download you'll find the following directories and files, logically grouping common assets and providing both compiled and minified variations.
bootstrap/
├── css/
│ ├── bootstrap-grid.css
│ ├── bootstrap-grid.css.map
│ ├── bootstrap-grid.min.css
│ ├── bootstrap-grid.min.css.map
│ ├── bootstrap-grid.rtl.css
│ ├── bootstrap-grid.rtl.css.map
│ ├── bootstrap-grid.rtl.min.css
│ ├── bootstrap-grid.rtl.min.css.map
│ ├── bootstrap-reboot.css
│ ├── bootstrap-reboot.css.map
│ ├── bootstrap-reboot.min.css
│ ├── bootstrap-reboot.min.css.map
│ ├── bootstrap-reboot.rtl.css
│ ├── bootstrap-reboot.rtl.css.map
│ ├── bootstrap-reboot.rtl.min.css
│ ├── bootstrap-reboot.rtl.min.css.map
│ ├── bootstrap-utilities.css
│ ├── bootstrap-utilities.css.map
│ ├── bootstrap-utilities.min.css
│ ├── bootstrap-utilities.min.css.map
│ ├── bootstrap-utilities.rtl.css
│ ├── bootstrap-utilities.rtl.css.map
│ ├── bootstrap-utilities.rtl.min.css
│ ├── bootstrap-utilities.rtl.min.css.map
│ ├── bootstrap.css
│ ├── bootstrap.css.map
│ ├── bootstrap.min.css
│ ├── bootstrap.min.css.map
│ ├── bootstrap.rtl.css
│ ├── bootstrap.rtl.css.map
│ ├── bootstrap.rtl.min.css
│ └── bootstrap.rtl.min.css.map
└── js/
├── bootstrap.bundle.js
├── bootstrap.bundle.js.map
├── bootstrap.bundle.min.js
├── bootstrap.bundle.min.js.map
├── bootstrap.esm.js
├── bootstrap.esm.js.map
├── bootstrap.esm.min.js
├── bootstrap.esm.min.js.map
├── bootstrap.js
├── bootstrap.js.map
├── bootstrap.min.js
└── bootstrap.min.js.map
We provide compiled CSS and JS (bootstrap.*), as well as compiled and minified CSS and JS (bootstrap.min.*). Source maps (bootstrap.*.map) are available for use with certain browsers' developer tools. Bundled JS files (bootstrap.bundle.js and minified bootstrap.bundle.min.js) include Popper.
Have a bug or a feature request? Please first read the issue guidelines and search for existing and closed issues. If your problem or idea is not addressed yet, please open a new issue.
Bootstrap's documentation, included in this repo in the root directory, is built with Hugo and publicly hosted on GitHub Pages at https://getbootstrap.com/. The docs may also be run locally.
Documentation search is powered by Algolia's DocSearch.
npm install to install the Node.js dependencies, including Hugo (the site builder).npm run test (or a specific npm script) to rebuild distributed CSS and JavaScript files, as well as our docs assets./bootstrap directory, run npm run docs-serve in the command line.http://localhost:9001/ in your browser, and voilà.Learn more about using Hugo by reading its documentation.
You can find all our previous releases docs on https://getbootstrap.com/docs/versions/.
Previous releases and their documentation are also available for download.
Please read through our contributing guidelines. Included are directions for opening issues, coding standards, and notes on development.
Moreover, if your pull request contains JavaScript patches or features, you must include relevant unit tests. All HTML and CSS should conform to the Code Guide, maintained by Mark Otto.
Editor preferences are available in the editor config for easy use in common text editors. Read more and download plugins at https://editorconfig.org/.
Get updates on Bootstrap's development and chat with the project maintainers and community members.
irc.libera.chat server, in the #bootstrap channel.bootstrap-5).bootstrap on packages which modify or add to the functionality of Bootstrap when distributing through npm or similar delivery mechanisms for maximum discoverability.For transparency into our release cycle and in striving to maintain backward compatibility, Bootstrap is maintained under the Semantic Versioning guidelines. Sometimes we screw up, but we adhere to those rules whenever possible.
See the Releases section of our GitHub project for changelogs for each release version of Bootstrap. Release announcement posts on the official Bootstrap blog contain summaries of the most noteworthy changes made in each release.
Mark Otto
Jacob Thornton
Thanks to BrowserStack for providing the infrastructure that allows us to test in real browsers!
Thanks to Netlify for providing us with Deploy Previews!
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]
Thank you to all our backers! 🙏 [Become a backer]
Code and documentation copyright 2011–2023 the Bootstrap Authors. Code released under the MIT License. Docs released under Creative Commons.
FAQs
The most popular front-end framework for developing responsive, mobile first projects on the web.
The npm package bootstrap receives a total of 3,375,779 weekly downloads. As such, bootstrap popularity was classified as popular.
We found that bootstrap demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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