Bootstrap/site/content/docs/4.3/utilities/borders.md

layout	title	description	group	toc
docs	Borders	Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element.	utilities	true

Border

Use border utilities to add or remove an element's borders. Choose from all borders or one at a time.

Additive

{{< example >}} {{< /example >}}

Subtractive

{{< example >}} {{< /example >}}

Border color

Change the border color using utilities built on our theme colors.

{{< example >}} {{< border.inline >}} {{- range (index $.Site.Data "theme-colors") }} {{- end -}} {{< /border.inline >}} {{< /example >}}

Border-radius

Add classes to an element to easily round its corners.

{{< placeholder width="75" height="75" class="rounded" title="Example rounded image" >}} {{< placeholder width="75" height="75" class="rounded-top" title="Example top rounded image" >}} {{< placeholder width="75" height="75" class="rounded-right" title="Example right rounded image" >}} {{< placeholder width="75" height="75" class="rounded-bottom" title="Example bottom rounded image" >}} {{< placeholder width="75" height="75" class="rounded-left" title="Example left rounded image" >}} {{< placeholder width="75" height="75" class="rounded-circle" title="Completely round image" >}} {{< placeholder width="150" height="75" class="rounded-pill" title="Rounded pill image" >}} {{< placeholder width="75" height="75" class="rounded-0" title="Example non-rounded image (overrides rounding applied elsewhere)" >}}

{{< highlight html >}} {{< /highlight >}}

Sizes

Use .rounded-lg or .rounded-sm for larger or smaller border-radius.

{{< placeholder width="75" height="75" class="rounded-sm" title="Example small rounded image" >}} {{< placeholder width="75" height="75" class="rounded-lg" title="Example large rounded image" >}}

{{< highlight html >}} {{< /highlight >}}