# blur function

The `blur` function allows you to Gaussian blur background images.

## Syntax

`selector { filter: blur(blur radius); }`

## Example

Let's set our image blur to `2px`:

`<div id="elem"></div>` `#elem { filter: blur(2px); background-blend-mode: normal; background: url("bg.png") center / cover no-repeat, linear-gradient(#00A8DE, #FFF) fixed; width: 400px; height: 300px; border: 1px solid black; }`

:

## See also

- the `brightness` function
  that sets a background brightness
- the `contrast` function
  that sets a background contrast
- the `drop-shadow` function
  that sets a background shadow
- the `hue-rotate` function
  that sets a background hue
- the `invert` function
  that inverts background colors
- the `opacity` function
  that sets a background opacity
- the `sepia` function
  that converts a background to sepia
- the `background` property
  that is a shorthand property for a background
- the `background-image` property
  with that you can set a background image for a block
- the `filter` property
  that sets a background style

← →
↑
en ru