老师，麻烦检查一下

来源：2-15 编程练习

山有木兮木有枝z

2020-06-12 23:07:31

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>background属性</title>
    <style type="text/css">
    *{
        margin:0;
        padding:0;
    }
        div{
           width:600px;
           height:300px;
           border:10px solid rgba(255,0,0,0.5);
           text-align:center;
           padding:20px;
           background:url("http://climg.mukewang.com/582c39c00001091605000150.jpg") no-repeat;

          background-size:90%;
          background-position:center 150px;
          background-clip:padding-box;
        }
    </style>
</head>
<body>
   <div>
       <h3>慕课网国内最大的it技能学习平台</h3>
   </div>
</body>
</html>