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

How they work

Containers are used to contain, pad, and (sometimes) center the content within them. While containers can be nested, most layouts do not require a nested container.

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

Extra small
.container 100% 540px 720px 960px 1140px 1320px
.container-sm 100% 540px 720px 960px 1140px 1320px
.container-md 100% 100% 720px 960px 1140px 1320px
.container-lg 100% 100% 100% 960px 1140px 1320px
.container-xl 100% 100% 100% 100% 1140px 1320px
.container-xxl 100% 100% 100% 100% 100% 1320px
.container-fluid 100% 100% 100% 100% 100% 100%

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 -->

Fluid containers

Use .container-fluid for a full width container, spanning the entire width of the viewport.

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


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>



As shown above, Bootstrap generates a series of predefined container classes to help you build the layouts you desire. You may customize these predefined container classes by modifying the Sass map that powers them:

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