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console
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            margin: 10px;
        }
        
        .box {
            width: 250px;
            height: 250px;
            border: 1px solid red;
        }
        
        .box1 {
            width: 60px;
            height: 200px;
            float: left;
            background-color: red;
        }
        
        .box2 {
            width: 100px;
            height: 100px;
            float: left;
            background-color: yellow;
        }
        
        .box3 {
            width: 150px;
            height: 100px;
            background-color: blue;
            float: left;
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="box1"></div>
        <div class="box2"></div>
        <div class="box3"></div>
    </div>
</body>

</html>