background-position-y

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Summary

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. For more information, see the background-position property, which has been widely supported for much longer.

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

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
Animatableno
Canonical orderthe unique non-ambiguous order defined by the formal grammar

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;

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>
A <length> value defining 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>
A <percentage> value defining 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 subproperties of background-position, to match longstanding implementations.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 49.0 (49.0) (Yes) (Yes) (Yes)
Two-value syntax (support for offsets from any edge) No support 49.0 (49.0) (Yes) No support ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 49.0 (49.0) ? ? (Yes)
Two-value syntax (support for offsets from any edge) ? 49.0 (49.0) ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: Sebastianz, DBaron
 Last updated by: Sebastianz,