Utilities

## Background

Use background utilities to quickly style the background of an element. Great for cards, buttons, or any other element. Read the Official Bootstrap Documentation for a full list of instructions and other options.

##### Gray Set

A set of gray background utilities classes.

##### Background Color

Similar to the contextual text color classes, set the background of an element to any contextual class.

##### Background Gradient

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.

##### 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.