pseudo class

• 1. 伪类: Pseudo-classes | hover | before
• 2. 伪类选择符: Pseudo-classes Selectors | CSS Pseudo-Classes Reference
• 3. 伪类及伪对象选择符: Pseudo Selectors

更多释义

• 1.清单4显示了：after伪类技术所使用的CSS代码。
  Listing 4 shows the CSS code for the: after pseudo-class technique.
  dict.yoduao.com
• 2.通过这样做，从而向不必需要伪类的其它事物隐藏了该伪类。
  Doing so hides the sham from other things that don't necessarily need it.
  dict.yoduao.com
• 3.伪元素与伪类相似（语法也相同），但它定义的是文档中的内容。
  Pseudo-elements are similar to pseudo-classes (and share syntax with them) but define content within the document. Pseudo-elements defined by the CSS2 Recommendation include
  dict.yoduao.com

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