css3和css伪类和伪元素区别与兼容性

时间 2019-12-04

标签 css3 css 元素区别兼容性栏目 CSS 繁體版

原文原文链接

单冒号(:)用于CSS3伪类，双冒号(::)用于CSS3伪元素。css 伪元素由双冒号和伪元素名称组成。双冒号是在当前规范中引入的，用于区分伪类和伪元素。可是伪类兼容现存样式，浏览器须要同时支持旧的伪类，好比:first-line、:first-letter、:before、:after等。css3 对于CSS2以前已有的伪元素，好比:before，单冒号和双冒号的写法::before做用是同样的

>>阅读原文<<

1. CSS - 伪类和伪元素的区别
2. CSS伪类和伪元素的区别
3. CSS3伪类和伪元素的特性和区别
4. css伪元素与伪类的区别
5. css伪类与伪元素区别
6. CSS---伪类与伪元素的区别
7. css伪类和伪元素的区别，:before和::before的区别
8. css伪类和伪元素
9. CSS伪类和伪元素
10. css—伪类和伪元素
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