> For the complete documentation index, see [llms.txt](https://docs.acho.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acho.io/app-builder/app-construction/elements/css-styles/background.md).

# Background

## Background type

### Background Color:

The background-color property sets the background color of an element. It can be specified using a color name (e.g. "red"), a hexadecimal value (e.g. "#ff0000"), or an RGB value (e.g. "RGB(255, 0, 0)") or RGBA (e.g. "RGBA(255,0,0,0.5)")

### Background Image(bglmg):

 The background-image property sets an image as the background of an element. The URL of the image can be specified in the value of the property.