边框练习-边框，阴影，圆角-190318
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>图片边框练习</title>
<link rel="stylesheet" type="text/css" href="demo2.css">
<style>
*{margin:0px;padding:0px;}
div{
width: 400px;
/*边框*/
border: 1px dashed #ccc;
/*阴影*/
box-shadow: 2px 2px 20px #ccc;
margin:30px auto;
border-radius : 10px ;
}
</style>
</head>
<body>
<div>
<img src="http://img.zcool.cn/community/0130d15acf6392a80121386742b344.gif@2o.png" alt="这是一个头像" width="400px">
</div>
</body>
</html>