Get started with Bootstrap, the world’s most popular framework for building responsive, mobile-first sites, with jsDelivr and a template starter page.
Quick start
Looking to quickly add Bootstrap to your project? Use jsDelivr, provided for free by the folks at jsDelivr. Using a package manager or need to download the source files? Head to the downloads page.
CSS
Copy-paste the stylesheet into your before all other stylesheets to load our CSS.
Many of our components require the use of JavaScript to function. Specifically, they require jQuery, Popper.js, and our own JavaScript plugins. Place the following s near the end of your pages, right before the closing
tag, to enable them. jQuery must come first, then Popper.js, and then our JavaScript plugins.
We use jQuery’s slim build, but the full version is also supported.
Curious which components explicitly require jQuery, our JS, and Popper.js? Click the show components link below. If you’re at all unsure about the general page structure, keep reading for an example page template.
Alerts for dismissing
Buttons for toggling states and checkbox/radio functionality
Carousel for all slide behaviors, controls, and indicators
Collapse for toggling visibility of content
Dropdowns for displaying and positioning (also requires Popper.js)
Modals for displaying, positioning, and scroll behavior
Navbar for extending our Collapse plugin to implement responsive behavior
Tooltips and popovers for displaying and positioning (also requires Popper.js)
Scrollspy for scroll behavior and navigation updates
Starter template
Be sure to have your pages set up with the latest design and development standards. That means using an HTML5 doctype and including a viewport meta tag for proper responsive behaviors. Put it all together and your pages should look like this:
That’s all you need for overall page requirements. Visit the Layout docs or our official examples to start laying out your site’s content and components.
Important globals
Bootstrap employs a handful of important global styles and settings that you’ll need to be aware of when using it, all of which are almost exclusively geared towards the normalization of cross browser styles. Let’s dive in.
HTML5 doctype
Bootstrap requires the use of the HTML5 doctype. Without it, you’ll see some funky incomplete styling, but including it shouldn’t cause any considerable hiccups.
Responsive meta tag
Bootstrap is developed mobile first, a strategy in which we optimize code for mobile devices first and then scale up components as necessary using CSS media queries. To ensure proper rendering and touch zooming for all devices, add the responsive viewport meta tag to your .
You can see an example of this in action in the starter template.
Box-sizing
For more straightforward sizing in CSS, we switch the global box-sizing value from content-box to border-box . This ensures padding does not affect the final computed width of an element, but it can cause problems with some third party software like Google Maps and Google Custom Search Engine.
On the rare occasion you need to override it, use something like the following:
.selector-for-some-widgetbox-sizing:content-box;>
With the above snippet, nested elements—including generated content via ::before and ::after —will all inherit the specified box-sizing for that .selector-for-some-widget .
Reboot
For improved cross-browser rendering, we use Reboot to correct inconsistencies across browsers and devices while providing slightly more opinionated resets to common HTML elements.
Community
Stay up to date on the development of Bootstrap and reach out to the community with these helpful resources.
Follow @getbootstrap on Twitter.
Read and subscribe to The Official Bootstrap Blog.
Chat with fellow Bootstrappers in IRC. On the irc.freenode.net server, in the ##bootstrap channel.
Implementation help may be found at Stack Overflow (tagged bootstrap-4 ).
Developers should use the keyword bootstrap on packages which modify or add to the functionality of Bootstrap when distributing through npm or similar delivery mechanisms for maximum discoverability.
You can also follow @getbootstrap on Twitter for the latest gossip and awesome music videos.
Download Bootstrap to get the compiled CSS and JavaScript, source code, or include it with your favorite package managers like npm, RubyGems, and more.
Compiled CSS and JS
Download ready-to-use compiled code for Bootstrap v5.1.3 to easily drop into your project, which includes:
This doesn’t include documentation, source files, or any optional JavaScript dependencies like Popper.
Source files
Compile Bootstrap with your own asset pipeline by downloading our source Sass, JavaScript, and documentation files. This option requires some additional tooling:
Should you require our full set of build tools, they are included for developing Bootstrap and its docs, but they’re likely unsuitable for your own purposes.
Examples
If you want to download and examine our examples, you can grab the already built examples:
CDN via jsDelivr
Skip the download with jsDelivr to deliver cached version of Bootstrap’s compiled CSS and JS to your project.
Pull in Bootstrap’s source files into nearly any project with some of the most popular package managers. No matter the package manager, Bootstrap will require a Sass compiler and Autoprefixer for a setup that matches our official compiled versions.
npm
Install Bootstrap in your Node.js powered apps with the npm package:
const bootstrap = require(‘bootstrap’) or import bootstrap from ‘bootstrap’ will load all of Bootstrap’s plugins onto a bootstrap object. The bootstrap module itself exports all of our plugins. You can manually load Bootstrap’s plugins individually by loading the /js/dist/*.js files under the package’s top-level directory.
Bootstrap’s package.json contains some additional metadata under the following keys:
sass — path to Bootstrap’s main Sass source file
style — path to Bootstrap’s non-minified CSS that’s been precompiled using the default settings (no customization)
Get started with Bootstrap via npm with our starter project! Head to the twbs/bootstrap-npm-starter template repository to see how to build and customize Bootstrap in your own npm project. Includes Sass compiler, Autoprefixer, Stylelint, PurgeCSS, and Bootstrap Icons.
yarn
Install Bootstrap in your Node.js powered apps with the yarn package:
RubyGems
Install Bootstrap in your Ruby apps using Bundler (recommended) and RubyGems by adding the following line to your Gemfile :
Alternatively, if you’re not using Bundler, you can install the gem by running this command:
gem install bootstrap -v 5.1.3
Composer
You can also install and manage Bootstrap’s Sass and JavaScript using Composer:
composer require twbs/bootstrap:5.1.3
NuGet
If you develop in .NET, you can also install and manage Bootstrap’s CSS or Sass and JavaScript using NuGet:
Install-Packagebootstrap.sass
Designed and built with all the love in the world by the Bootstrap team with the help of our contributors.