abstract：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Document</title><style>*{margin:0;padding:0;}div{margin:50px auto;}.crl{width: 200px;height:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{margin:0;padding:0;}
div{margin:50px auto;}
.crl{width: 200px;height:50px;border:1px solid #ccc;}
.ty{width: 200px;height:200px;border:1px solid #ccc;border-radius:100px;}
.out-shadow{
width: 500px;
height:200px;
box-shadow:0px 6px 20px yellow;
}
.inner-shadow{
width: 500px;
height:200px;
box-shadow:0px 6px 20px red inset;
}
</style>
</head>
<body>
<div class="crl"></div>
<div class="ty"></div>
<div class="out-shadow">外阴影</div>
<div class="inner-shadow">内阴影</div>
</body>
</html>
Correcting teacher：韦小宝Correction time：2019-03-06 15:43:39
Teacher's summary：css中的边框样式还是比较灵活的 使用的也很多