类选择器 | Class selectors (Selectors) – CSS 中文开发手册
CSS 类选择器根据其class属性的内容匹配元素。
/* All elements with class="spacious" */
.spacious {
margin: 2em;
}
/* All <li> elements with class="spacious" */
li.spacious {
margin: 2em;
}
语法
.class_name { style properties }
请注意，这相当于以下内容attribute selector：
[class~=class_name] { style properties }
实例
CSS
div.classy {
background-color: skyblue;
}
HTML
<div class="classy">This div has a special class on it!</div> <div>This is just a regular div.</div>
结果
规范
|
Specification |
Status |
Comment |
|---|---|---|
|
Selectors Level 4The definition of ‘class selectors‘ in that specification. |
Working Draft |
No changes |
|
Selectors Level 3The definition of ‘class selectors‘ in that specification. |
Recommendation |
? |
|
CSS Level 2 (Revision 1)The definition of ‘child selectors‘ in that specification. |
Recommendation |
? |
|
CSS Level 1The definition of ‘child selectors‘ in that specification. |
Recommendation |
Initial definition |
浏览器兼容性
|
Feature |
Chrome |
Edge |
Firefox (Gecko) |
Internet Explorer |
Opera |
Safari |
|---|---|---|---|---|---|---|
|
Basic support |
(Yes) |
(Yes) |
(Yes) |
(Yes) |
(Yes) |
(Yes) |
|
Feature |
Android |
Chrome for Android |
Edge |
Firefox Mobile (Gecko) |
IE Mobile |
Opera Mobile |
Safari Mobile |
|---|---|---|---|---|---|---|---|
|
Basic support |
? |
? |
(Yes) |
? |
? |
? |
? |
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