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简述伪类和伪元素 #65

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GGXXMM opened this issue Nov 16, 2020 · 0 comments

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css

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GGXXMM commented Nov 16, 2020 •

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一、伪类

用于向某些选择器添加特殊的效果。比如（:hover，:active，:focus，:link，:visited）

二、伪元素

伪元素就像在文档里插入假想的元素，从而添加特殊的效果。
例如：

:first-letter
:first-line
:before
:after

GGXXMM added the css label

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