<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>box-shadow</title>
<style>
.box{
position: relative;
width: 700px;
height: 200px;
margin: 0 auto;
background: #fff;
text-align: center;
line-height: 200px;
font-size: 25px;
box-shadow: 0 1px 4px rgba(0,0,0,0.3),
0 0 1px rgba(0,0,0,0.3) inset;
}
.box:after,.box:before{
display: block;
position: absolute;
content:'';
background: rgba(0,0,0,1);
bottom: 0;
left: 15px;
right: 15px;
top: 50%;
z-index: -1;
box-shadow: 0 0px 20px rgba(0,0,0,0.4);
border-radius: 30%;
}
.box1{
width: 400px;
height: 300px;
background: #f1f1f1;
margin: 0 auto;
margin-top: 15px;
line-height: 300px;
font-size: 25px;
text-align: center;
box-shadow:0 1px 4px rgba(0,0,0,0.4),
0 0 60px rgba(0,0,0,0.4) inset;
border-radius: 12px;
position: relative;
}
.box1:before,.box1:after{
position: absolute;
content: '';
display: block;
width: 80%;
height: 80%;
left: 43px;
bottom: 11px;
background: #f1f1f1;
box-shadow: 0 8px 20px rgba(0,0,0,0.7);
z-index: -1;
}
.box1:before{
transform: skew(-12deg) rotate(-4deg);
}
.box1:after{
transform: skew(12deg) rotate(4deg);
}
</style>
</head>
<body>
<div class="box">
box-shadow曲线阴影
</div>
<div class="box1">
<div class="img">box-shadow翘边阴影</div>
</div>
</body>
</html>
