理解:Before和:After僞元素

時間 2019-12-14

標籤理解元素简体版

原文原文鏈接

CSS樣式表的主要做用是修飾Web頁面上的HTML標記，但有時候，爲了實現某個效果而往頁面裏反覆添加某個HTML標記很繁瑣，或者是顯得多餘，或者是因爲某種緣由而作不到。這就是CSS僞元素(Pseudo-Element)能夠發揮做用的地方，所謂‘僞元素’，就是自己不存在的頁面元素，HTML代碼裏並無這樣的元素，但在頁面顯示時，你卻能看到這些原本不存在的元素髮揮着做用。css 觀看演示以前咱們曾簡要

>>阅读原文<<

1. 對僞元素::after和::before的理解
2. 理解僞元素 :before 和 :after
3. 理解僞元素 :Before 和 :After
4. 僞元素 before after
5. 僞元素::after和::before
6. before和：after僞元素
7. ::before 和 ::after 僞元素
8. 僞類元素before&after
9. CSS僞類元素：after ：before
10. css僞元素 ::after ::before
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