Bootstrap · Die weltweit populärste HTML-, CSS- und JS-Bibliothek.

Bootstrap is an open-source frontend toolkit used to build responsive websites with HTML, CSS, and JavaScript. It provides a prebuilt grid system, reusable components, Sass-based customization, and JavaScript plugins for interactive features. The library can be installed via package managers such as npm, RubyGems, Composer, or Meteor, or included directly through a CDN. The current version documented on the site is 5.3.3, and the project also offers documentation, examples, icons, themes, and blog resources.

Bootstrap utilizes Sass for a modular and customizable architecture. You can import only the components you need, activate global options like gradients and shadows, and write your own CSS with variables, maps, functions, and mixins. The website provides an example where you set variable overrides first, then import the Bootstrap stylesheet.

The website states that the code is licensed under MIT, and the documentation is licensed under CC BY 3.0. It also mentions that the project is designed and built with love by the Bootstrap team and with the help of contributors. The footer links include documentation, examples, icons, themes, and a blog.

The website provides a simple quickstart to see the CDN in action or browse examples to start your next project. You can also choose to include Popper and the JavaScript separately. The installation documentation is available for more information and additional package managers.

The website mentions that the project is currently at version 5.3.3 and offers links to all versions. It also provides a link to the example repository and community issues. The footer includes links to discussions, corporate sponsors, and Open Collective.

The official website of Bootstrap · Die weltweit populärste HTML-, CSS- und JS-Bibliothek. is bootstrapcss.de.

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