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The outline-offset CSS property sets the amount of space between an outline and the edge or border of an element.

An outline is a line that is drawn around an element, outside the border edge. The space between an element and its outline is transparent. In other words, it is the same as the parent element's background.

Syntax

/* <length> values */
outline-offset: 3px;
outline-offset: 0.2em;

/* Global values */
outline-offset: inherit;
outline-offset: initial;
outline-offset: unset;

Values

<length>
The width of the space between the element and its outline. A negative value places the outline inside the element. A value of 0 places the outline so that there is no space between it and the element.

Formal syntax

<length>

Example

p {
  outline: 1px dashed red;
  outline-offset: 10px;
  background: yellow;
  border: 1px solid blue;
  margin: 15px;
}
<p>Gallia est omnis divisa in partes tres.</p>

Specifications

Specification Status Comment
CSS Transitions
The definition of 'outline-offset' in that specification.
Working Draft Defines outline-offset as animatable.
CSS Basic User Interface Module Level 3
The definition of 'outline-offset' in that specification.
Recommendation Initial definition
Initial value0
Applies toall elements
Inheritedno
Mediaas each of the properties of the shorthand:
Computed valueas specified, but with relative lengths converted into absolute lengths
Animation typea length
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Browser compatibility

 

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
outline-offsetChrome Full support 1Edge Full support 15Firefox Full support 1.5IE No support NoOpera Full support 9.5Safari Full support 1.2WebView Android Full support 37Chrome Android Full support 18Firefox Android Full support 4Opera Android ? Safari iOS Full support 1Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

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