Bootstrap Reference

Build fast, responsive sites with the world's most popular front-end open source toolkit. Explore 28 entries across 10 categories.

Showing 28 references
Flexbox

Align Items Center

Centers flex items vertically.

Utilities

Background Dark

Dark background color.

Components

Badge

Small count and labeling component.

Borders

Border

Adds a solid border.

Components

Card

A flexible and extensible content container.

Grid

Column

Auto-sizing column.

Layout

Container

Sets a max-width at each responsive breakpoint.

Layout

Container Fluid

A full width container, spanning the entire width of the viewport.

Layout

Display Flex

Enables flexbox behaviors.

Layout

Display None

Hides the element completely.

Forms

Form Control

Styles for textual inputs.

Forms

Form Select

Styles for select menus.

Sizing

Height 100%

Sets height to 100%.

Flexbox

Justify Center

Centers flex items horizontally.

Spacing

Margin Top 3

Adds a predefined margin to the top.

Components

Navbar

Responsive navigation header.

Effects

Opacity 50%

Sets element opacity to 50%.

Spacing

Padding Bottom 4

Adds a predefined padding to the bottom.

Components

Primary Button

Primary action button.

Grid

Responsive Column

Column that applies on medium devices and up.

Borders

Rounded

Adds default border radius.

Grid

Row

Wrapper for columns.

Components

Secondary Button

Secondary action button.

Effects

Shadow

Adds a medium drop shadow.

Components

Success Alert

Alert for success messages.

Utilities

Text Center

Centers text horizontally.

Utilities

Text Primary

Primary text color.

Sizing

Width 100%

Sets width to 100%.