老師！請檢查3-12編程練習

<!DOCTYPE html>
<html>
    <head>
   <meta charset="UTF-8">
   <title>vertical-align</title>
   <style type="text/css">
    *{padding:0px;margin: 0px;}
   
    .warp1{    
              height:80px;
              width: 100%;
              background-color: #14191e;    
              line-height: 80px;          
           /*在此补充代码*/
             }

     .warp1 h1{ color:#fff;
      text-align: center;
      vertical-align:middle;
       /*在此补充代码*/ }

     .warp2{
              height:400px;
              width: 100%;
              border:1px  #14191e solid;
              display: table;
              /*在此补充代码*/                    
             } 

     .content{    
              /*在此补充代码*/
              vertical-align: middle;
              display: table-cell;
              text-align: center;
              }

     .content  p{ width:500px;
                  font-family: "微软雅黑";
                  margin:0 auto;
        /*在此补充代码*/}   

   </style>
</head>
<body>
<div class="warp1">
          <h1>欢迎来到慕课网</h1>      
</div>
  <div class="warp2">
        <div class="content">
           <p>慕课网，只学有用的！</p>
           <p>慕课网（IMOOC）是IT技能学习平台。慕课网(IMOOC)提供了丰富的移动端开发、php开发、web前端、android开发以及html5等视频教程资源公开课。并且富有交互性及趣味性，你还可以和朋友一起编程。</p>
        </div>
</div>    

</body>
</html>

慕数据3203843 2019-08-13

源自：CSS文本样式 3-12 编程练习