From ce02da885e127e34642f638412e5039926a011a1 Mon Sep 17 00:00:00 2001
From: jaywcjlove <398188662@qq.com>
Date: Sun, 30 Oct 2022 23:13:21 +0800
Subject: [PATCH] doc: update `css.md`.

---
 docs/css.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/docs/css.md b/docs/css.md
index ab7c0adc..82c754df 100644
--- a/docs/css.md
+++ b/docs/css.md
@@ -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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