我的第一个网站.html

<!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>
        body{
            margin:0;
            height: 100vh;
            background-color: #eee;
        }
        * {
            border: 1px solid black;
        }
        .flex {
            display: flex;
        }
        .white {
            background-color: #eee;
        }
        .flex1 {
            flex: 1;
        }
        .column {

        }
    </style>
</head>
<body class="flex">
    <!--侧边栏-->
    <div style="width: 200px" class="white">

    </div>
    <!--侧边栏-->
    <div class="flex1 flex column">
        <div style="height: 60px;" class="white">

        </div>
        <div class="flex1 flex">
            <div style="flex: 3;" class = "flex column"></div>
            <div style="flex:1" class="flex colunm"></div>
        </div>
    </div>
</body>
</html>