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Bootstrap includes dozens of utilities—classes with a single purpose to reduce the frequency of highly repetitive declarations.


Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element.


Add classes to an element to remove all borders or some borders.

<span class="border-0"></span>
<span class="border-top-0"></span>
<span class="border-right-0"></span>
<span class="border-bottom-0"></span>
<span class="border-left-0"></span>


Add classes to an element to easily round its corners.

Example rounded image Example top rounded image Example right rounded image Example bottom rounded image Example left rounded image Completely round image Example non-rounded image (overrides rounding applied elsewhere)
<img src="..." alt="..." class="rounded">
<img src="..." alt="..." class="rounded-top">
<img src="..." alt="..." class="rounded-right">
<img src="..." alt="..." class="rounded-bottom">
<img src="..." alt="..." class="rounded-left">
<img src="..." alt="..." class="rounded-circle">
<img src="..." alt="..." class="rounded-0">