Borders
Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element.
Borders on BootstrapBorder
The classes are named using the format border-{side} for xs and border-{breakpoint}-{side} for sm, md, lg, xl, and xxl.
Whereside is one of:
- top- for classes that set style for- border-top
- bottom- for classes that set style for- border-bottom
- left- for classes that set style for- border-start
- right- for classes that set style for- margin-right
- x- for classes that set both- *-leftand- *-right
- y- for classes that set both- *-topand- *-bottom
- blank - for classes that set theborderstyle on all 4 side of the element.
Use border utilities to quickly style theborder of an element. Great for images, buttons, or any other element.
Additive
<span class="border"></span>
<span class="border-top"></span>
<span class="border-end"></span>
<span class="border-bottom"></span>
<span class="border-start"></span>Subtractive
<span class="border border-0"></span>
<span class="border border-top-0"></span>
<span class="border border-end-0"></span>
<span class="border border-bottom-0"></span>
<span class="border border-start-0"></span>Border Radius & sizes
Add helper classes to an element to easily round its corners. For the rounded border, the class are named using the format rounded-*
<span class="rounded-0"></span>
<span class="rounded-1"></span>
<span class="rounded-2"></span>
<span class="rounded-3"></span>
<span class="rounded-circle"></span>
<span class="rounded-pill" style="width:150px; height:75px;"></span>You can control top, right, bottom, left border radius of different size, using the helper classes. The classes also support responsive behaviors like rounded-{xxl | xl | lg | md | sm}-*. Examples are given below
<span class="rounded-top"></span>
<span class="rounded-top-lg"></span>
<span class="rounded-end"></span>
<span class="rounded-end-lg"></span>
<span class="rounded-bottom"></span>
<span class="rounded-bottom-lg"></span>
<span class="rounded-start"></span>
<span class="rounded-start-lg"></span>Border Style
 For the dashed border, the classes are named using the format, border-dashed-{side} for xs and border-{breakpoint}-dashed-{side} for sm, md, lg, xl  and xxl.
Whereside is same as documented before.
<span class="border-dashed"></span>
<span class="border-dashed-top"></span>
<span class="border-dashed-right"></span>
<span class="border-dashed-bottom"></span>
<span class="border-dashed-left"></span>Border Width
You can control border width using helper classes border-{1|2|3|4|5}. In addition, you can also use border-top-2, border-end-2, border-bottom-2, border-start-2.
<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>
<hr />
<span class="border border-top-2"></span>
<span class="border border-end-2"></span>
<span class="border border-bottom-2"></span>
<span class="border border-start-2"></span>Border Color
Border color set as currentColor  and border width 1px . Modifier can be used to change border color and width. The modifier classes for color are named using the format border-{color}.
Where color is one of:primary, secondary, success, info, warning, danger, light, dark, black, 1100, 1000, 900, 800, 700, 600, 500, 400, 300, 200, 100, white,
              
<span class="border border-info"></span>
<span class="border border-success"></span>
<span class="border border-warning"></span>
<span class="border border-danger"></span>
<span class="border border-cake"></span>
<span class="border border-facebook"></span>
<span class="border border-twitter"></span>
<span class="border border-google-plus"></span>
<span class="border border-github"></span>
<div class="w-100"></div>
<span class="border border-black"></span>
<span class="border border-dark"></span>
<span class="border border-1100"></span>
<span class="border border-1000"></span>
<span class="border border-900"></span>
<span class="border border-800"></span>
<span class="border border-700"></span>
<span class="border border-600"></span>
<span class="border border-500"></span>
<span class="border border-400"></span>
<span class="border border-300"></span>
<span class="border border-200"></span>
<span class="border border-100"></span>
<span class="border border-light"></span>
<span class="border border-white"></span>
<span class="border border-2"></span>
<span class="border-top border-top-2"></span>
<span class="border-end border-end-2"></span>
<span class="border-bottom border-bottom-2"></span>
<span class="border-start border-start-2"></span>