background-position-y

The background-position-y CSS property sets the initial vertical position, relative to the background position layer defined by background-origin, for each defined background image.

The value of this property is overridden by any declaration of the background or background-position shorthand properties applied to the element after it.

Syntax

/* Keyword values */
background-position-y: top;
background-position-y: center;
background-position-y: bottom;

/* <percentage> values */
background-position-y: 25%;

/* <length> values */
background-position-y: 0px;
background-position-y: 1cm;
background-position-y: 8em;

/* Side-relative values */
background-position-y: bottom 3px;
background-position-y: bottom 10%;

/* Multiple values */
background-position-y: 0px, center;

/* Global values */
background-position-y: inherit;
background-position-y: initial;
background-position-y: unset;

The background-position-y property is specified as one or more values, separated by commas.

Values

top
Aligns the top edge of the background image with the top edge of the background position layer.
center
Aligns the vertical center of the background image with the vertical center of the background position layer.
bottom
Aligns the bottom edge of the background image with the bottom edge of the background position layer.
<length>
The offset of the given background image's vertical edge from the corresponding background position layer's vertical edge. If no edge is given, it refers to the top edge.
<percentage>
The offset of the given background image's vertical edge from the corresponding background position layer's vertical edge relative to its height. If no edge is given, it refers to the top edge.

Formal syntax

[ center | [ top | bottom | y-start | y-end ]? <length-percentage>? ]#

where
<length-percentage> = <length> | <percentage>

Specifications

Specification Status Comment
CSS Backgrounds and Borders Module Level 4
The definition of 'background-position-y' in that specification.
Editor's Draft Initial specification of longhand sub-properties of background-position to match longstanding implementations.

Initial valuetop
Applies toall elements
Inheritedno
Percentagesrefer to height of background positioning area minus height of background image
Mediavisual
Computed valueA list, each item consisting of: an offset given as a combination of an absolute length and a percentage, plus an origin keyword
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes12496 Yes Yes
Two-value syntax (support for offsets from any edge) No12499 No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes49 ? ? ?
Two-value syntax (support for offsets from any edge) No No Yes49 No No ?

See also

Document Tags and Contributors

 Contributors to this page: wbamberg, mfluehr, fscholz, captainbarbosa, teoli, erikadoyle, Sebastianz, DBaron
 Last updated by: wbamberg,