border-left-color - CSS（层叠样式表） 编辑

 border-left-color 属性设置元素的左边框颜色。值得注意的是，在大数情况下使用 border-color 或 border-left 更加方便和普遍。

/* <color> values */
border-left-color: red;
border-left-color: #ffbb00;
border-left-color: rgb(255, 0, 0);
border-left-color: hsla(100%, 50%, 25%, 0.75);
border-left-color: currentColor;
border-left-color: transparent;

/* Global values */
border-left-color: inherit;
border-left-color: initial;
border-left-color: unset;

初始值	currentcolor
适用元素	all elements. It also applies to ::first-letter.
是否是继承属性	否
计算值	computed color
Animation type	a color

语法 

 border-left-color 属性取值为单个颜色值.

取值

<color>

左边框的颜色。

正式语法

<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>

例子

一个带边框的简单 div

HTML

<div class="mybox">
  <p>This is a box with a border around it.
     Note which side of the box is
     <span class="redtext">red</span>.</p>
</div>

CSS

.mybox {
    border: solid 0.3em gold;
    border-left-color: red;
    width: auto;
}
.redtext {
    color: red;
}

Result

Specifications

Specification	Status	Comment
CSS Backgrounds and Borders Module Level 3 border-left-color	Candidate Recommendation	No significant changes, though the transparent keyword, now included in <color> which has been extended, has been formally removed.
CSS Level 2 (Revision 1) border-left-color	Recommendation	Initial definition

Browser compatibility

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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.

See also

• The border-related CSS shorthand properties: border, border-left, and border-color.
• The color-related CSS properties for the other borders: border-right-color, border-bottom-color, and border-top-color.
• The other border-related CSS properties applying to the same border: border-left-style and border-left-width.