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Bootstrap Bootstrap Docs Examples Icons Themes Blog GitHub GitHub Twitter Twitter Open Collective Open Collective Bootstrap Bootstrap v5.3 (switch to other versions) v5 releases Latest (5.3.x) v5.2.3 v5.1.3 v5.0.2 Previous releases v4.6.x v3.4.1 v2.3.2 All versions Toggle theme Light Dark Auto New! Never-Ending Support for Bootstrap Build fast, responsive sites with Bootstrap Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins. npm i bootstrap@5.3.3 Read the docs Currently v5.3.3 · Download · All releases Get started any way you want Jump right into building with Bootstrap—use the CDN, install it via package manager, or download the source code. Read installation docs Install via package manager Install Bootstrap’s source Sass and JavaScript files via npm, RubyGems, Composer, or Meteor. Package managed installs don’t include documentation or our full build scripts. You can also use any demo from our Examples repo to quickly jumpstart Bootstrap projects. npm install bootstrap@5.3.3 gem install bootstrap -v 5.3.3 Read our installation docs for more info and additional package managers. Include via CDN When you only need to include Bootstrap’s compiled CSS or JS, you can use jsDelivr . See it in action with our simple quick start , or browse the examples to jumpstart your next project. You can also choose to include Popper and our JS separately .link href = "https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel = "stylesheet" integrity = "sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin = "anonymous" script src = "https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity = "sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin = "anonymous" / scriptRead our getting started guides Get a jump on including Bootstrap’s source files in a new project with our official guides. Webpack Parcel Vite Customize everything with Sass Bootstrap utilizes Sass for a modular and customizable architecture. Import only the components you need, enable global options like gradients and shadows, and write your own CSS with our variables, maps, functions, and mixins. Learn more about customizing Include all of Bootstrap’s Sass Import one stylesheet and you’re off to the races with every feature of our CSS. // Variable overrides first $primary : #900 ; $enable-shadows : true ; $prefix : "mo-" ; // Then import Bootstrap @import "../node_modules/bootstrap/scss/bootstrap" ; Learn more about our global Sass options . Include what you need The easiest way to customize Bootstrap—include only the CSS you need. // Functions first @import "../node_modules/bootstrap/scss/functions" ; // Variable overrides second $primary : #900 ; $enable-shadows : true ; $prefix : "mo-" ; // Required Bootstrap imports @import "../node_modules/bootstrap/scss/variables" ; @import "../node_modules/bootstrap/scss/variables-dark" ; @import "../node_modules/bootstrap/scss/maps" ; @import "../node_modules/bootstrap/scss/mixins" ; @import "../node_modules/bootstrap/scss/root" ; // Optional components @import "../node_modules/bootstrap/scss/utilities" ; @import "../node_modules/bootstrap/scss/reboot" ; @import "../node_modules/bootstrap/scss/containers" ; @import "../node_modules/bootstrap/scss/grid" ; @import "../node_modules/bootstrap/scss/helpers" ; @import "../node_modules/bootstrap/scss/utilities/api" ; Learn more ing Bootstrap with Sass . Build and extend in real-time with CSS variables Bootstrap 5 is evolving with each release to better utilize CSS variables for global theme styles, individual components, and even utilities. We provide dozens of variables for colors, font styles, and more at a :root level for use anywhere. On components and utilities, CSS variables are scoped to the relevant class and can easily be modified. Learn more about CSS variables Using CSS variables Use any of our global :root variables to write new styles. CSS variables use the var(bs-variableName) syntax and can be inherited by children elements. .component { color : var (bs-gray-800 ); background-color : var (bs-gray-100 ); border : 1 px solid var (bs-gray-200 ); border-radius : .25 rem ; } .component-header { color : var (bs-purple ); } Customizing via CSS variables Override global, component, or utility class variables to customize Bootstrap just how you like. No need to redeclare each rule, just a new variable value. body { bs-body-font-family : var (bs-font-monospace ); bs-body-line-height : 1 .4 ; bs-body-bg : var (bs-gray-100 ); } .table { bs-table-color : var (bs-gray-600 ); bs-table-bg : var (bs-gray-100 ); bs-table-border-color : transparent ; } Components, meet the Utility API New in Bootstrap 5, our utilities are now generated by our Utility API . We built it as a feature-packed Sass map that can be quickly and easily customized. It’s never been easier to add, remove, or modify any utility classes. Make utilities responsive, add pseudo-class variants, and give them custom names. Quickly customize components Apply any of our included utility classes to our components to customize their appearance, like the navigation example below. There are hundreds of classes available—from positioning and sizing to colors and effects . Mix them with CSS variable overrides for even more control. Home Profile Contact Home Profile Contactul class = "nav nav-pills nav-fill gap-2 p-1 small bg-primary rounded-5 shadow-sm" id = "pillNav2" role = "tablist" style = "bs-nav-link-color: var(bs-white); bs-nav-pills-link-active-color: var(bs-primary); bs-nav-pills-link-active-bg: var(bs-white);" li class = "nav-item" role = "presentation" button class = "nav-link active rounded-5" id = "home-tab2" data-bs-toggle = "tab" type = "button" role = "tab" aria-selected = "true"Home / button/ li li class = "nav-item" role = "presentation" button class = "nav-link rounded-5" id = "profile-tab2" data-bs-toggle = "tab" type = "button" role = "tab" aria-selected = "false"Profile / button/ li li class = "nav-item" role = "presentation" button class = "nav-link rounded-5" id = "contact-tab2" data-bs-toggle = "tab" type = "button" role = "tab" aria-selected = "false"Contact / button/ li/ ulExplore customized components Create and extend utilities Use Bootstrap’s utility API to modify any of our included utilities or create your own custom utilities for any project. Import Bootstrap first, then use Sass map functions to modify, add, or remove utilities. @import "bootstrap/scss/bootstrap" ; $utilities : map-merge ( $utilities , ( "cursor" : ( property : cursor , class : cursor , responsive : true , values : auto pointer grab , ) ) ); Explore the utility API Powerful JavaScript plugins without jQuery Add toggleable hidden elements, modals and offcanvas menus, popovers and tooltips, and so much more—all without jQuery. Bootstrap’s JavaScript is HTML-first, meaning most plugins are added with data attributes in your HTML. Need more control? Include individual plugins programmatically. Learn more about Bootstrap JavaScript Data attribute API Why write more JavaScript when you can write HTML? Nearly all of Bootstrap’s JavaScript plugins feature a first-class data API, allowing you to use JavaScript just by adding data attributes. Dropdown Dropdown item Dropdown item Dropdown itemdiv class = "dropdown" button class = "btn btn-primary dropdown-toggle" type = "button" data-bs-toggle = "dropdown" aria-expanded = "false"Dropdown / button ul class = "dropdown-menu" libutton class = "dropdown-item" type = "button"Dropdown item / button / li libutton class = "dropdown-item" type = "button"Dropdown item / button / li libutton class = "dropdown-item" type = "button"Dropdown item / button / li/ ul/ divLearn more about our JavaScript as modules and using the programmatic API . Comprehensive set of plugins Bootstrap...