Containers

Bootstrap 5 Containers

Containers are a fundamental building block of Bootstrap that contain, pad, and align your content within a given device or viewport.

How it works

Containers are the most basic layout element in Bootstrap and are required when using default grid system. Containers are used to contain, pad, and (sometimes) center the content within them. Although containers can be nested, most layouts do not require a nested container.

There are three different containers available in Bootstrap:

• .container, which sets a max-width at each responsive breakpoint
• .container-fluid, which is width: 100% at all breakpoints
• .container-{breakpoint}, which is width: 100% until the specified breakpoint

The table below illustrates how each container's max-width compares to the original .container and .container-fluid across each breakpoint.

See them in action and compare them in our Grid example.

Default container

Our default .container class is a responsive, fixed-width container, meaning its max-width changes at each breakpoint.

        
            
          <div class="container">
            <!-- Content here -->
          </div>
        
        
    

Responsive containers

Responsive containers allow you to specify a class that is 100% wide until the specified breakpoint is reached, after which we apply max-widths for each of the higher breakpoints. For example, .container-sm is 100% wide to start until the sm breakpoint is reached, where it will scale up with md, lg, xl, and xxl.

        
            
          <div class="container-sm">100% wide until small breakpoint</div>
          <div class="container-md">100% wide until medium breakpoint</div>
          <div class="container-lg">100% wide until large breakpoint</div>
          <div class="container-xl">100% wide until extra large breakpoint</div>
          <div class="container-xxl">100% wide until extra extra large breakpoint</div>
        
        
    

Fluid containers

Use .container-fluid to get a full width container that covers the entire width of the viewport.

        
            
          <div class="container-fluid">
            ...
          </div>
        
        
    

Sass

As shown above, Bootstrap generates a series of predefined container classes to help you build the layouts you want. You may customize these predefined container classes by modifying the Sass map (found in _variables.scss) that powers them:

        
            
          $container-max-widths: (
            sm: 540px,
            md: 720px,
            lg: 960px,
            xl: 1140px,
            xxl: 1320px
          );
        
        
    

In addition to customizing the Sass, you can also create custom containers using Sass mixins.

        
            
          // Source mixin
          @mixin make-container($padding-x: $container-padding-x) {
            width: 100%;
            padding-right: $padding-x;
            padding-left: $padding-x;
            margin-right: auto;
            margin-left: auto;
          }

          // Usage
          .custom-container {
            @include make-container();
          }
        
        
    

Related resources