CSS参考手册
选择 | Selectors
类选择器 | Class selectors
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) |
? |
? |
? |
? |
选择 | Selectors相关
层叠样式表( Cascading Style Sheets )是一种用来表现 HTML 或 XML 等文件样式的计算机语言。CSS 不仅可以静态地修饰网页,还可以配合各种脚本语言动态地对网页各元素进行格式化。