摘要：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Document</title><style type="text/css">.d1{width: 200px;height: 200px;border:1px s
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.d1{width: 200px;height: 200px;border:1px solid #ccc;}
.d2{width:200px;height: 200px;border:1px double #999;border-radius: 40px;}
button{border:none;}
.d3{width:100px;height:100px;box-shadow: 0px 5px 20px #CCC inset;}
</style>
</head>
<body>
<div></div>
<div></div>
<div></div>
<button>登陆</button>
</body>
</html>
批改老师：天蓬老师批改时间：2019-01-03 13:33:43
老师总结：;box-shadow: 0px 5px 20px #CCC , 0px, 建议0后面不要加单位
