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.
/* <length> values */ outline-offset: 3px; outline-offset: 0.2em; /* Global values */ outline-offset: inherit; outline-offset: initial; outline-offset: unset;
<length>
0
places the outline so that there is no space between it and the element.<length>
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>
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 value | 0 |
---|---|
Applies to | all elements |
Inherited | no |
Media | as each of the properties of the shorthand:
|
Computed value | as specified, but with relative lengths converted into absolute lengths |
Animation type | a length |
Canonical order | the unique non-ambiguous order defined by the formal grammar |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 1 | ? | 1.5 | No | 9.5 | 1.2 |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | ? | ? | ? | ? | ? | ? | ? |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/outline-offset