文本装饰线厚度 (粗细)
CSS 属性 text-decoration-thickness
用于设置元素中文本所使用的装饰线(如 line-through、underline 或 overline)的笔触厚度。
语法
css
/* Single keyword */
text-decoration-thickness: auto;
text-decoration-thickness: from-font;
/* length */
text-decoration-thickness: 0.1em;
text-decoration-thickness: 3px;
/* percentage */
text-decoration-thickness: 10%;
/* Global values */
text-decoration-thickness: inherit;
text-decoration-thickness: initial;
text-decoration-thickness: unset;
值
auto
-
由浏览器为文本装饰线选择合适的厚度。
from-font
-
如果字体文件中包含了首选的厚度值,则使用字体文件的厚度值。如果字体文件中没有包含首选的厚度值,则效果和设置为
auto
一样,由浏览器选择合适的厚度值。 <length>
-
将文本装饰线的厚度设置为一个
<length>
类型的值,覆盖掉字体文件建议的值或浏览器默认的值。 <percentage>
-
Specifies the thickness of the text decoration line as a
<percentage>
of 1em in the current font. A percentage inherits as a relative value, and so therefore scales with changes in the font. The browser must use a minimum of 1 device pixel. For a given application of this property, the thickness is constant across the whole box it is applied to, even if there are child elements with a different font size.
Formal definition
初始值 | auto |
---|---|
适用元素 | 所有元素. It also applies to ::first-letter and ::first-line . |
是否是继承属性 | 否 |
Percentages | refer to the font size of the element itself |
计算值 | as specified |
动画类型 | 按计算值的类型 |
Formal syntax
text-decoration-thickness =
auto |
from-font |
<length-percentage>
<length-percentage> =
<length> |
<percentage>
示例
Varying thickness
HTML
html
<p class="thin">Here's some text with a 1px red underline.</p>
<p class="thick">This one has a 5px red underline.</p>
<p class="shorthand">This uses the equivalent shorthand.</p>
CSS
css
.thin {
text-decoration-line: underline;
text-decoration-style: solid;
text-decoration-color: red;
text-decoration-thickness: 1px;
}
.thick {
text-decoration-line: underline;
text-decoration-style: solid;
text-decoration-color: red;
text-decoration-thickness: 5px;
}
.shorthand {
text-decoration: underline solid red 5px;
}
Results
规范
Specification |
---|
CSS Text Decoration Module Level 4 # text-decoration-width-property |
浏览器兼容性
BCD tables only load in the browser