border-right-width

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

CSS 属性 border-right-width 用于设置元素右边框的宽度。

尝试一下

语法

css
/* 关键字值 */
border-right-width: thin;
border-right-width: medium;
border-right-width: thick;

/* <length> 值 */
border-right-width: 10em;
border-right-width: 3vmax;
border-right-width: 6px;

/* 全局关键字 */
border-right-width: inherit;
border-right-width: initial;
border-right-width: revert;
border-right-width: revert-layer;
border-right-width: unset;

<line-width>

定义边框的宽度,明确的非负 <length> 值或者是关键字。如果它是关键字,则必须是以下值之一:

  • thin
  • medium
  • thick

备注: 因为规范没有定义每个关键字表示的确切宽度,所以使用其中的某个关键字所得到的精确结果是特定于实现的。不过,它们通常遵循 thin ≤ medium ≤ thick 的模式,且这些值在单独的文档中是固定不变的。

形式定义

初始值medium
适用元素所有元素. It also applies to ::first-letter.
是否是继承属性
计算值绝对长度;或如果 border-right-style 的值为 nonehidden,则为 0
动画类型a length

形式语法

border-right-width = 
<line-width>

<line-width> =
<length [0,∞]> |
thin |
medium |
thick

示例

边框宽度对比

HTML

html
<div>元素 1</div>
<div>元素 2</div>

CSS

css
div {
  border: 1px solid red;
  margin: 1em 0;
}

div:nth-child(1) {
  border-right-width: thick;
}
div:nth-child(2) {
  border-right-width: 2em;
}

结果

规范

Specification
CSS Backgrounds and Borders Module Level 3
# the-border-width

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
border-right-width

Legend

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Full support
Full support

参见