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Bootstrap 4 is the fourth major version of the popular front-end component library. The Bootstrap framework aids in the creation of responsive, mobile-first websites and web apps. Use in conjunction with the main [twitter-bootstrap] tag.

Bootstrap 4 is the fourth major version of the popular front-end component library and open-source toolkit for developing with HTML, CSS, and JS. The Bootstrap framework aids in the creation of responsive, mobile-first websites and web apps. Bootstrap 4 embraces flexbox and Sass technologies. Bootstrap is open-sourced on GitHub.

The latest release of bootstrap-4 is 4.6.2.

There are newer versions at getbootstrap.com

Stack Snippet Starter Pack

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-xOolHFLEh07PJGoPkLv1IbcEPTNtaed2xpHsD9ESMhqIYd0nLMwNLD69Npy4HI+N" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-Fy6S3B9q64WdZWQUiU+q4/2Lc9npb8tCaSX9FK7E8HnRr0Jz8D6OP9dO5Vg3Q9ct" crossorigin="anonymous"></script>

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