How to Add Borders using Bootstrap

You can quickly style the border and border-radius of an element. It can be used for images, buttons, blocks or any other element.

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1. Adding Borders

Use border utilities to add element's borders - either all four sides or one at a time.

<span class="border"></span>
<span class="border-top"></span>
<span class="border-end"></span>
<span class="border-bottom"></span>
<span class="border-start"></span>

2. Border Color

You can change the border color using any of the color classes. For example,

<span class="border border-info"></span>

3. Border Opacity

You can change the opacity of border color by adding .border-opacity utility class.

  • border-opacity-10
  • border-opacity-25
  • border-opacity-50
  • border-opacity-75

4. Border Width

You can also change the width of the border.

<span class="border border-1"></span>
<span class="border border-2"></span>
<span class="border border-3"></span>
<span class="border border-4"></span>
<span class="border border-5"></span>

5. Border Radius

You can add classes to an element to easily round its corners. For example,

<img src="/..." alt="..." class="rounded">
<img src="/..." alt="..." class="rounded-top">
<img src="/..." alt="..." class="rounded-end">
<img src="/..." alt="..." class="rounded-bottom">
<img src="/..." alt="..." class="rounded-start">
<img src="/..." alt="..." class="rounded-circle">
<img src="/..." alt="..." class="rounded-pill">
<img src="/..." alt="..." class="rounded-0">

6. Rounded Size

You can use the scaling classes for larger or smaller rounded corners.

For example,

<img src="/..." class="rounded-5" alt="...">

Sizes range from 0 to 5.