doc: update docs/css.md

2023-03-04 10:25:48 +08:00 · 2023-03-04 10:25:48 +08:00 · 3ddd8d7fea
commit 3ddd8d7fea
parent 7facfea3f9
1 changed files with 14 additions and 0 deletions
--- a/docs/css.md
+++ b/docs/css.md
@ -1811,6 +1811,20 @@ div:has(h2):has(ul) {
 }
 ```

+### 获取 HTML 元素的属性
+
+```html
+<a href="https://example.com">超链接</a>
+```
+
+attr HTML 元素的属性名。
+
+```css
+a:after {
+  content: " (" attr(href) ")";
+}
+```
+
 另见
 ---------