doc: update css.md.

This commit is contained in:
jaywcjlove 2022-10-30 23:13:21 +08:00
parent fb464bd4ff
commit ce02da885e

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@ -282,6 +282,19 @@ p:first-child {
`a:hover ` | 鼠标悬停链接 [#](https://developer.mozilla.org/zh-CN/docs/Web/CSS/:hover)
`a:visited ` | 访问链接 [#](https://developer.mozilla.org/zh-CN/docs/Web/CSS/:visited)
---
```css
/* 未访问链接 */
a:link { color: blue; }
/* 已访问链接 */
a:visited { color: purple; }
/* 用户鼠标悬停 */
a:hover { background: yellow; }
/* 激活链接 */
a:active { color: red; }
```
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