请问一下这个代码怎么写

img

这个就是基础div+flex布局

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .box{
            width: 100%;
            height:100vh;
        }
        .header{
            width: 100%;
            height: 10%;
            background: red;
        }
        .content{
            width: 100%;
            height: 80%;
            display: flex;
        }
        .content .nav{
            width: 10%;
            height: 100%;
            background: burlywood;
        }
        .content .article{
            width: 80%;
            height: 100%;
            background: blue;
        }
        .content .aside{
            width: 10%;
            height: 100%;
            background: yellow;
        }
        .footer{
            width: 100%;
            height: 10%;
            background: goldenrod;
        }
    </style>
</head>
<body>
     <div class="box">
         <div class="header">
             header
         </div>
         <div class="content">
              <div class="nav">
                  nav
              </div>
              <div class="article">
                article
              </div>
              <div class="aside">
                  aside
              </div>
         </div>
         <div class="footer">footer</div>
     </div>
</body>
</html>