老师检查下

来源：5-2 编程练习

罗杰明

2020-01-07 16:13:58

    <html>
   <head>
       <meta charset="text/css">
       <title>网站测试</title>
       <style type="text/css">
           .div1{
               background-color:red;
               width:100px;
               height:100px;
               position:absolute;
              left:30px;
              top:30px;
           }
           .div2{
               background-color:green;
               width:100px;
               height:100px;
               position:absolute;
               z-index:30;
           }
       </style>
   </head>
   <body>
       <div class="div1"></div>
       <div class="div2"></div>
   </body>
   </html>