Is bootstrap open source?

bootstrap is open source. It is a set of open source front-end frameworks for website and network application development, including HTML, CSS and JavaScript frameworks, providing font typography, forms, buttons, navigation and other components and Javascript extensions.

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Bootstrap is a set of open source front-ends for website and web application development ( The so-called "front end" refers to the interface displayed to the end user. The corresponding "back end" is the code (code) framework running on the server, including HTML, CSS and JavaScript frameworks, providing font printing, forms, buttons , navigation and various other components and Javascript extensions designed to make the development of dynamic web pages and web applications easier.

Bootstrap is the fourth most "Starred" project on GitHub. Starred more than 133,000 times and branched more than 65,000 times.

Bootstrap is compatible with the latest versions of Google Chrome, Firefox, Internet Explorer, Opera and Safari browsers, although some browsers do not support all operating systems.

Starting from version 2.0, Bootstrap supports responsive web design (RWD). Page layout can be dynamically adjusted based on the device on which the web page is displayed (desktop, tablet, mobile phone).

Starting from version 3.0, Bootstrap prioritizes mobile devices as its design guideline, placing more emphasis on responsive design.

The 4.0 alpha version adds support for Sass and Flexbox.

Bootstrap is open source software and can be found on GitHub. Developers are encouraged to participate in the project and make their own contributions to the project.

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