<html>
  <head>
  <title> new document </title>
  <meta name="author" content="胡超" />
  <meta charset="utf-8"/>
  <style type="text/css">/*解决div里插入img下边缝隙问题
  1.容器div font-size:0px;
  2.img设置vertical-align:middle top bottom;
  3.img设置display:block;
  */
  div{
  border:1px solid red;
  font-size:0px;
  }
  img{
  border:1px solid black;
   
  }
  </style>
  </head>
   
  <body>
  <div>
  <img src="images/airplane2.png">
  <div>
  </body>
  </html>