Containers
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 the most basic layout element in Bootstrap and are required when using our default grid system . 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.
Bootstrap comes with three different containers:
.container
, which sets amax-width
at each responsive breakpoint.container-fluid
, which iswidth: 100%
at all breakpoints.container-{breakpoint}
, which iswidth: 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 .
Extra small <576px |
Small ≥576px |
Medium ≥768px |
Large ≥992px |
X-Large ≥1200px |
XX-Large ≥1400px |
|
---|---|---|---|---|---|---|
.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 -->
</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-width
s 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
for a full width container, spanning 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 desire. You may customize these predefined container classes by modifying the Sass map (found in _variables.scss
) that powers them:
$container-max-widths: (
sm: 540px,
md: 720px,
lg: 960px,
xl: 1140px,
xxl: 1320px
);
In addition to customizing the Sass, you can also create your own containers with our Sass mixin.
// Source mixin
@mixin make-container($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();
}
For more information and examples on how to modify our Sass maps and variables, please refer to the Sass section of the Grid documentation .