Bootstrap framework utilities: Background , Border

Other utilities, such as borders and colors, are also often used together with containers :

Example

 <div class="container p-3 my-3 border"></div>

<div class="container p-3 my-3 bg-dark text-white"></div>

<div class="container p-3 my-3 bg-primary text-white"></div> 

Responsive Containers

You can also use the .container-sm|md|lg|xl classes to create responsive containers.

The max-width of the container will change on different screen sizes/viewports:

ClassExtra small
<576px
Small
≥576px
Medium
≥768px
Large
≥992px
Extra large
≥1200px
.container-sm100%540px720px960px1140px
.container-md100%100%720px960px1140px
.container-lg100%100%100%960px1140px
.container-xl100%100%100%100%1140px

Example

<div class="container-sm">.container-sm</div>
<div class="container-md">.container-md</div>
<div class="container-lg">.container-lg</div>
<div class="container-xl">.container-xl</div>