Summary

If a background-image is specified, the background-attachment CSS property determines whether that image's position is fixed within the viewport, or scrolls along with its containing block.

Syntax

background-attachment: scroll;
background-attachment: fixed;
background-attachment: local;

background-attachment: inherit;

Values

fixed
This keyword means that the background is fixed with regard to the viewport. Even if an element has a scrolling mechanism, a ‘fixed’ background doesn't move with the element.
local
This keyword means that the background is fixed with regard to the element's contents: if the element has a scrolling mechanism, the background scrolls with the element's contents, and the background painting area and background positioning area are relative to the scrollable area of the element rather than to the border framing them.
scroll
This keyword means that the background is fixed with regard to the element itself and does not scroll with its contents. (It is effectively attached to the element's border.)

Formal syntax

<attachment>#

where
<attachment> = scroll | fixed | local

Examples

View the live example

body {
  background-image: url("images/cartooncat.png");
  background-attachment: fixed;
}

Multiple background image support

This property supports multiple background images. You can specify a different <attachment> for each background, separated by commas:

body {
  background-image: url("img1.png"), url("img2.png");
  background-attachment: scroll, fixed;
}

Each image is matched with the corresponding attachment type, from first specified to last.

Specifications

Specification Status Comment
CSS Backgrounds and Borders Module Level 3
The definition of 'background-attachment' in that specification.
Candidate Recommendation The shorthand property has been extended to support multiple backgrounds and the local value.
CSS Level 2 (Revision 1)
The definition of 'background-attachment' in that specification.
Recommendation No significant change.
CSS Level 1
The definition of 'background-attachment' in that specification.
Recommendation No significant change

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 1.0 1.0 (1.7 or earlier) 4.0 3.5 1.0
Multiple backgrounds 1.0 3.6 (1.9.2) 9.0 10.5 1.3
local 4.0 25 (25) 9.0 10.5 5.0
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support 2.1 1.0 (1.9.2) ? 10.0 3.2
Multiple backgrounds 2.1 1.0 (1.9.2) ? 10.0 3.2
local ? 25.0 (25) ? ? ?

See also