box-shadow
参数:
h-shadow(必需):水平阴影的位置,允许负值
v-shadow(必需):垂直阴影的位置,允许负值
blur(可选):模糊距离
spread(可选):阴影的尺寸
color(可选):阴影的颜色
inset(可选):将外部阴影(outset)改为内部阴影
eg:
![](https://img.haomeiwen.com/i3508659/a63ac77c7e5b1f2d.png)
<style>
.effect{
position: relative;
width: 800px;
height: 200px;
background-color: #fff;
box-shadow: 0px 1px 4px rgba(0,0,0,0.3)
,0px 0px 40px rgba(0,0,0,0.1) inset; //水平和垂直阴影的值都设置为0,阴影会从中间发散至四周。
}
.effect:after,.effect:before{
position: absolute;
content: '';
background: #fff;
top:50%;
bottom:0;
left: 10px;
right: 10px;
box-shadow: 0px 0px 20px rgba(0,0,0,0.3);
z-index: -999;
border-radius: 100px/10px;
}
</style>
<div class="effect"></div>
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