outline-offset
概要
outline-offset
CSS 属性用于设置 outline
与一个元素边缘或边框之间的间隙。
outline是元素的轮廓,悬浮在元素边框之上。元素和其轮廓之间是透明的。也就是说,它们之间的颜色会继承父元素的背景色。
初始值 | 0 |
---|---|
适用元素 | all elements |
是否是继承属性 | 否 |
计算值 | as specified, but with relative lengths converted into absolute lengths |
Animation type | a length |
The space will be transparent (the parent will determine the background).
Syntax
/* <length> values */
outline-offset: 3px;
outline-offset: 0.2em;
/* Global values */
outline-offset: inherit;
outline-offset: initial;
outline-offset: unset;
Values
<length>
- 元素和轮廓间的宽度. 详见
<length>
. 负值将轮廓绘制在元素之内.
Formal syntax
Examples
p {
outline: dashed thin;
/* Move the outline 10px away from the border */
outline-offset: 10px;
border:1px solid black;
}
Html
<p>outline: offset 10px. Border is solid and outline is dashed</p>
上面的代码将产生以下效果:
另一个例子:
outline: multiple offsets;
Specifications
Specification | Status | Comment |
---|---|---|
CSS Transitions outline-offset |
Working Draft | Defines outline-offset as animatable. |
CSS Basic User Interface Module Level 3 outline-offset |
Recommendation | Initial definition |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
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Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 1.0 | 1.5 (1.8) | 未实现 | 9.5 | 1.2 |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? |