{{CSSRef}}
Summary
The background-position-x
CSS property sets the initial horizontal position, relative to the background position layer defined by {{cssxref("background-origin")}} for each defined background image. For more information, see the {{cssxref("background-position")}} property, which has been widely supported for much longer.
Note: The value of this property is overridden by any declaration of the {{cssxref("background")}} or {{cssxref("background-position")}} shorthand properties applied to the element after the
background-position-x
CSS property.{{cssinfo}}
Syntax
/* Keyword values */ background-position-x: left; background-position-x: center; background-position-x: right; /* <percentage> values */ background-position-x: 25%; /* <length> values */ background-position-x: 0px; background-position-x: 1cm; background-position-x: 8em; /* side-relative values */ background-position-x: right 3px; background-position-x: left 25%; /* Multiple values */ background-position-x: 0px, center; /* Global values */ background-position-x: inherit; background-position-x: initial; background-position-x: unset;
Values
left
- Aligns the left edge of the background image with the left edge of the background position layer.
center
- Aligns the center of the background image with the center of the background position layer.
right
- Aligns the right edge of the background image with the right edge of the background position layer.
<length>
- A {{cssxref("<length>")}} value defining the offset of the background image from the background position layer's horizontal edge. If no edge is given, it refers to the left edge.
<percentage>
- A {{cssxref("<percentage>")}} value defining the offset of the background image from the background position layer's horizontal edge relative to its width. If no edge is given, it refers to the left edge.
Formal syntax
{{csssyntax}}
Specifications
Specification | Status | Comment |
---|---|---|
{{SpecName('CSS4 Backgrounds', '#background-position-longhands', 'background-position-x')}} | {{Spec2('CSS4 Backgrounds')}} | Initial specification of longhand subproperties of background-position, to match longstanding implementations. |
Browser compatibility
{{CompatibilityTable}}
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | {{CompatVersionUnknown}} | {{CompatGeckoDesktop("49.0")}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} |
Two-value syntax (support for offsets from any edge) | {{CompatNo}} | {{CompatGeckoDesktop("49.0")}} | {{CompatVersionUnknown}} | {{CompatNo}} | {{CompatUnknown}} |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | {{CompatVersionUnknown}} | {{CompatGeckoMobile("49.0")}} | {{CompatUnknown}} | {{CompatUnknown}} | {{CompatVersionUnknown}} |
Two-value syntax (support for offsets from any edge) | {{CompatUnknown}} | {{CompatGeckoMobile("49.0")}} | {{CompatUnknown}} | {{CompatUnknown}} | {{CompatUnknown}} |
See also
- {{cssxref("background-position")}}
- {{cssxref("background-position-y")}}
- {{cssxref("background-position-inline")}}
- {{cssxref("background-position-block")}}
- Multiple backgrounds