border-block

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组成特性
句法
形式定义
形式句法
范例
规范
浏览器兼容性
另请参阅
相关话题

border-block CSS 特性为 shorthand property for setting the individual logical block border property values in a single place in the style sheet.

border-block: 1px;
border-block: 2px dotted;
border-block: medium dashed blue;

border-block can be used to set the values for one or more of border-block-width , border-block-style ，和 border-block-color setting both the start and end in the block dimension at once. The physical borders to which it maps depends on the element's writing mode, directionality, and text orientation. It corresponds to the border-top and border-bottom or border-right ，和 border-left properties depending on the values defined for writing-mode , direction ，和 text-orientation .

The borders in the other dimension can be set with border-inline , which sets border-inline-start ，和 border-inline-end .

组成特性

此特性是下列 CSS 特性的简写：

句法

值

border-block is specified with one or more of the following, in any order:

<'border-width'>: The width of the border. See border-width .
<'border-style'>: The line style of the border. See border-style .
<'color'>: The color of the border. See color .

形式定义

初始值	as each of the properties of the shorthand: `border-top-width` : `medium` `border-top-style` : `none` `border-top-color` : `currentcolor`
适用于	所有元素
继承	no
计算值	as each of the properties of the shorthand: `border-top-width` : the absolute length or `0` if `border-top-style` is `none` or `hidden` `border-top-style` ：如指定 `border-top-color` ：计算颜色
动画类型	discrete

形式句法

<'border-top-width'> || <'border-top-style'> || <'color'>where 
<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>
where 
<rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )
<rgba()> = rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )
<hsl()> = hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )
<hsla()> = hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )
where 
<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>

范例

Border with vertical text

HTML

<div>
  <p class="exampleText">Example text</p>
</div>

CSS

div {
  background-color: yellow;
  width: 120px;
  height: 120px;
}
.exampleText {
  writing-mode: vertical-rl;
  border-block: 5px dashed blue;
}

Results

规范

规范	状态	注释
CSS Logical Properties and Values Level 1 The definition of 'border-block' in that specification.	编者草案	初始定义

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`border-block`	Chrome 完整支持 69	Edge 完整支持 79	Firefox 完整支持 66	IE 不支持 No	Opera 完整支持 56	Safari 不支持 No	WebView Android 完整支持 69	Chrome Android 完整支持 69	Firefox Android 完整支持 66	Opera Android 完整支持 48	Safari iOS 不支持 No	Samsung Internet Android 完整支持 10.0

图例

完整支持
不支持

另请参阅

This property maps to one of the physical border properties: border-top , border-right , border-bottom ，或 border-left .
writing-mode , direction , text-orientation

元数据

最后修改： Oct 20, 2020

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