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Bootstrap Borders Example


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

Border

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

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-0"></span> <span class="border-top-0"></span> <span class="border-end-0"></span> <span class="border-bottom-0"></span> <span class="border-start-0"></span>

Border color

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

<span class="border border-primary"></span> <span class="border border-secondary"></span> <span class="border border-success"></span> <span class="border border-danger"></span> <span class="border border-warning"></span> <span class="border border-info"></span> <span class="border border-light"></span> <span class="border border-dark"></span> <span class="border border-white"></span>

Border-width

<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>

Border-radius

Add classes to an element to easily round its corners.

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

Sizes

Use the scaling classes for larger or smaller rounded corners. Sizes range from 0 to 3, and can be configured by modifying the utilities API.

<img src="..." class="rounded-0" alt="..."> <img src="..." class="rounded-1" alt="..."> <img src="..." class="rounded-2" alt="..."> <img src="..." class="rounded-3" alt="...">

Sass

Variables

$border-width:                1px; $border-widths: (   1: 1px,   2: 2px,   3: 3px,   4: 4px,   5: 5px );  $border-color:                $gray-300; 
$border-radius:               .25rem; $border-radius-sm:            .2rem; $border-radius-lg:            .3rem; $border-radius-pill:          50rem;

Mixins

@mixin border-radius($radius: $border-radius, $fallback-border-radius: false) {   @if $enable-rounded {     border-radius: valid-radius($radius);   }   @else if $fallback-border-radius != false {     border-radius: $fallback-border-radius;   } }  @mixin border-top-radius($radius: $border-radius) {   @if $enable-rounded {     border-top-left-radius: valid-radius($radius);     border-top-right-radius: valid-radius($radius);   } }  @mixin border-end-radius($radius: $border-radius) {   @if $enable-rounded {     border-top-right-radius: valid-radius($radius);     border-bottom-right-radius: valid-radius($radius);   } }  @mixin border-bottom-radius($radius: $border-radius) {   @if $enable-rounded {     border-bottom-right-radius: valid-radius($radius);     border-bottom-left-radius: valid-radius($radius);   } }  @mixin border-start-radius($radius: $border-radius) {   @if $enable-rounded {     border-top-left-radius: valid-radius($radius);     border-bottom-left-radius: valid-radius($radius);   } }  @mixin border-top-start-radius($radius: $border-radius) {   @if $enable-rounded {     border-top-left-radius: valid-radius($radius);   } }  @mixin border-top-end-radius($radius: $border-radius) {   @if $enable-rounded {     border-top-right-radius: valid-radius($radius);   } }  @mixin border-bottom-end-radius($radius: $border-radius) {   @if $enable-rounded {     border-bottom-right-radius: valid-radius($radius);   } }  @mixin border-bottom-start-radius($radius: $border-radius) {   @if $enable-rounded {     border-bottom-left-radius: valid-radius($radius);   } }

Utilities API

Border utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.

    "border": (       property: border,       values: (         null: $border-width solid $border-color,         0: 0,       )     ),     "border-top": (       property: border-top,       values: (         null: $border-width solid $border-color,         0: 0,       )     ),     "border-end": (       property: border-right,       class: border-end,       values: (         null: $border-width solid $border-color,         0: 0,       )     ),     "border-bottom": (       property: border-bottom,       values: (         null: $border-width solid $border-color,         0: 0,       )     ),     "border-start": (       property: border-left,       class: border-start,       values: (         null: $border-width solid $border-color,         0: 0,       )     ),     "border-color": (       property: border-color,       class: border,       values: map-merge($theme-colors, ("white": $white))     ),     "border-width": (       property: border-width,       class: border,       values: $border-widths     ),     
    "rounded": (       property: border-radius,       class: rounded,       values: (         null: $border-radius,         0: 0,         1: $border-radius-sm,         2: $border-radius,         3: $border-radius-lg,         circle: 50%,         pill: $border-radius-pill       )     ),     "rounded-top": (       property: border-top-left-radius border-top-right-radius,       class: rounded-top,       values: (null: $border-radius)     ),     "rounded-end": (       property: border-top-right-radius border-bottom-right-radius,       class: rounded-end,       values: (null: $border-radius)     ),     "rounded-bottom": (       property: border-bottom-right-radius border-bottom-left-radius,       class: rounded-bottom,       values: (null: $border-radius)     ),     "rounded-start": (       property: border-bottom-left-radius border-top-left-radius,       class: rounded-start,       values: (null: $border-radius)     ),

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