Utilities

Background Color

Similar to the contextual text color classes, set the background of an element to any contextual class. Background utilities do not set color, so in some cases you’ll want to use .text-*color utilities.

.bg-primary

.bg-secondary

.bg-success

.bg-danger

.bg-warning

.bg-info

.bg-light

.bg-dark

.bg-body

.bg-body-secondary

.bg-body-tertiary

.bg-white

.bg-black

.bg-transparent

Background Gradient Color

By adding a .bg-gradient class, a linear gradient is added as background image to the backgrounds. This gradient starts with a semi-transparent white which fades out to the bottom.

.bg-gradient.bg-primary

.bg-secondary.bg-gradient

.bg-success.bg-gradient

.bg-danger.bg-gradient

.bg-warning.bg-gradient

.bg-info.bg-gradient

.bg-light.bg-gradient

.bg-dark.bg-gradient

.bg-black.bg-gradient

Soft Background

Similar to the contextual text color classes, set the background of an element to any contextual class. Background utilities do not set color, so in some cases you’ll want to use .text-* color utilities.

.bg-primary-subtle

.bg-secondary-subtle

.bg-success-subtle

.bg-danger-subtle

.bg-warning-subtle

.bg-info-subtle

.bg-light-subtle

.bg-dark-subtle

Background Gradient Color 2

.bg-primary-gradient

.bg-secondary-gradient

.bg-warning-gradient

.bg-info-gradient

.bg-success-gradient

.bg-danger-gradient

.bg-light-gradient

.bg-dark-gradient

Color & Background

Color and background helpers combine the power of our .text-* utilities and .bg-* utilities in one class. Using our Sass color-contrast() function, we automatically determine a contrasting color for a particular background-color.

Primary with contrasting color (.text-bg-primary)

Secondary with contrasting color (.text-bg-secondary)

Success with contrasting color (.text-bg-success)

Danger with contrasting color (.text-bg-danger)

Warning with contrasting color (.text-bg-warning)

Info with contrasting color (.text-bg-info)

Light with contrasting color (.text-bg-light)

Dark with contrasting color (.text-bg-dark)

Colored links

You can use the .link-* classes to colorize links. Unlike the .text-* classes, these classes have a :hover and :focus state.

Primary link Secondary link Success link Danger link Warning link Info link Light link Dark link

Background Opacity

background-color utilities are generated with Sass using CSS variables. This allows for real-time color changes without compilation and dynamic alpha transparency changes.

This is default primary background

This is 75% opacity primary background

This is 50% opacity primary background

This is 25% opacity primary background

This is 10% opacity success background

Text Color

Colorize text with color utilities. If you want to colorize links, you can use the .link-* helper classes which have :hover and :focus states.

.text-primary

.text-primary-emphasis

.text-secondary

.text-secondary-emphasis

.text-success

.text-success-emphasis

.text-danger

.text-danger-emphasis

.text-warning

.text-warning-emphasis

.text-info

.text-info-emphasis

.text-light

.text-light-emphasis

.text-dark

.text-dark-emphasis

.text-muted

.text-body

.text-body-emphasis

.text-body-secondary

.text-body-tertiary

.text-black

.text-white

.text-black-50

.text-white-50

Text Opacity Color

text color utilities are generated with Sass using CSS variables. This allows for real-time color changes without compilation and dynamic alpha transparency changes.

This is default primary text

This is 75% opacity primary text

This is 50% opacity primary text

This is 25% opacity primary text

Opacity

The opacity property sets the opacity level for an element. The opacity level describes the transparency level, where 1 is not transparent at all, .5 is 50% visible, and 0 is completely transparent. Set the opacity of an element using .opacity-{value} utilities.

100%

75%

50%

25%

Additive(Add) Border

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

Subtractive(Remove) Border

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

Border Color

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

Border Width Size

Border Opacity

choose from any of the .border-opacity utilities:

This is default success border

This is 75% opacity success border

This is 50% opacity success border

This is 25% opacity success border

This is 10% opacity success border

Border Subtle Color

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

Border Radius

Add classes to an element to easily round its corners.

Border Radius Size

Use the scaling classes for larger or smaller rounded corners. Sizes range from 0 to 5.

Text Selection

Use user-select-all, user-select-auto, or user-select-none class to the content which is selected when the user interacts with it.

This paragraph will be entirely selected when clicked by the user.

This paragraph has default select behavior.

This paragraph will not be selectable when clicked by the user.

Pointer Events

Bootstrap provides .pe-none and .pe-auto classes to prevent or add element interactions.

This link can not be clicked.

This link can be clicked (this is default behavior).

This link can not be clicked because the pointer-events property is inherited from its parent. However, this link has a pe-auto class and can be clicked.

Overflow

Adjust the overflow property on the fly with four default values and classes. These classes are not responsive by default.

This is an example of using .overflow-auto on an element with set width and height dimensions. By design, this content will vertically scroll.

This is an example of using .overflow-hidden on an element with set width and height dimensions.

This is an example of using .overflow-visible on an elementwith set width and height dimensions.

This is an example of using .overflow-scroll on an elementwith set width and height dimensions.

Position in Arrange

Arrange elements easily with the edge positioning utilities. The format is {property}-{position}.

Position in Center

In addition, you can also center the elements with the transform utility class .translate-middle.

Position in Axis

By adding .translate-middle-x or .translate-middle-y classes, elements can be positioned only in horizontal or vertical direction.

Shadows

While shadows on components are disabled by default in Bootstrap and can be enabled via $enable-shadows, you can also quickly add or remove a shadow with our box-shadow utility classes. Includes support for .shadow-none and three default sizes (which have associated variables to match).

No shadow

Small shadow

Regular shadow

Larger shadow

Width

Width utilities are generated from the utility API in _utilities.scss. Includes support for 25%, 50%, 75%, 100%, and auto by default. Modify those values as you need to generate different utilities here.

Width 25%

Width 50%

Width 75%

Width 100%

Width auto

Height

Height utilities are generated from the utility API in _utilities.scss. Includes support for 25%, 50%, 75%, 100%, and auto by default. Modify those values as you need to generate different utilities here.

Height25%

Height50%

Height75%

Height100%

auto

Object Fit

Change the value of the object-fit property with our responsive object-fit utility classes. This property tells the content to fill the parent container in a variety of ways, such as preserving the aspect ratio or stretching to take up as much space as possible.

.object-fit-contain

.object-fit-cover

.object-fit-fill

.object-fit-scale

.object-fit-none

Z-index

Use z-index utilities to stack elements on top of one another. Requires a position value other than static, which can be set with custom styles or using our position utilities.

z-3

z-2

z-1

z-0

z-n1

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