#home {
       margin: 0 auto;
       width: 80%;/*原始65*/
       min-width: 980px;/*页面顶部的宽度*/
       padding: 30px;
       margin-top: 50px;
       margin-bottom: 50px;
       box-shadow: 0 4px 6px rgba(100, 100, 100, 0.6);
  }