CSS background-size Property
Description
The background-size
property specifies the size of the background images. The size of the image can be fully constrained or only partially in order to preserve its intrinsic ratio.
- Initial value
- auto
- Applies to
- All elements
- Inherited
- No
- Media
- Visual
- Computed value
- As specified, but with lengths made absolute
- Animatable
- Yes
- CSS Version
- CSS3
- JavaScript syntax
- object.style.backgroundSize
Syntax
background-size: <bg-size> [ , <bg-size> ]*
Values
<bg-size> = [ <length> | <percentage> | auto ]{1,2} | cover | contain- <length>A floating-point number, followed by an absolute units designator (cm, mm, in, pt, or pc) or a relative units designator (em, ex, or px).
- <percentage>An integer, followed by a percent (%). A percentage value is relative to the background positioning area.
- autoScales the background image in the corresponding direction such that its intrinsic proportion is maintained.
- containScale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.
- coverScale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.
Example
<div> </div>
div {
height: 200px;
border: 2px solid #000;
background: url(images/diamond.png) no-repeat;
background-size: cover;
}
Browser Support
Desktop | |||||
9 | 12 | 3 | 4 | 10 | 5 |
Tablets / Mobile | |||||
![]() |
|||||
2.2 | 18 | 4 | 10.1 | 4.2 | 1.0 |
Last updated by CSSPortal on: 20th October 2019
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