> For the complete documentation index, see [llms.txt](https://sugar-at.gitbook.io/blog-article/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sugar-at.gitbook.io/blog-article/css/box-shadow.md).

# 1. box-shadow 阴影

box-shadow 属性把一个或多个下拉阴影添加到框上

## 格式

```css
box-shadow: h-shadow v-shadow blur spread color inset;
```

* h-shadow(必):水平阴影位置
* v-shadow(必):垂直阴影位置
* blur(选):模糊距离
* spread(选):阴影大小
* color(选):阴影颜色
* inset(选):内侧的阴影

## 例子

```css
/* 外阴影 */
.test1{
    box-shadow :-5px 0 0 0 deeppink;
}
/* 内阴影 */
.test2{
    box-shadow:inset 5px 0 0 0 deeppink
}
```


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