3-5作业

来源：3-5 编程练习

rock221

2021-02-23 13:29:11

<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .content{
            width:800px;
            height:400px;
            background-color: skyblue;
            padding-top:100px;
            box-sizing:border-box;
        }
        .top{
            width:400px;
            height:200px;
            background-color: yellow;
            margin-left:200px;
        }
    </style>
</head>
<body>
    <div class="content">
        <div class="top"></div>
    </div>
</body>
</html>