效果图：

 

个人实现代码（与原作者有所不同）：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        * {
            margin:0px;
            padding:0px;
        }
        .red {
            background:red;
        }
        .greenyellow {
            background:greenyellow
        }
        .yellow {
            background: peru;
        }
        .blue {
            background:blue;
        }
        .pink {
            background:pink;
        }
        .green{
            background:green;
        }
        .turquoise {
            background: turquoise;
        }
        .main{
            width: 970px;
            height: 600px;
            overflow: hidden;
        }
        .top{
            overflow: hidden;
        }
        .top-left {
            width:277px;
            height:103px;
            float:left;
        }
        .top-right1 {
            width: 137px;
            height:49px;
            float: right;
            margin-bottom: 8px;
        }
        .top-right2 {
            width: 679px;
            height:46px;
            float:right;
        }
        .center {
            height:435px;
            width:970px;
            margin-top: 10px;
            display:flow-root;

        }
        .center-left {
            height:435px;
            width:310px;
            float:left;
        }
        .center-middle1 {
            width:450px;
            height:240px;
            margin-bottom: 10px;
        }
        .center-middle2 {
            width:450px;
            height:110px;
            margin-bottom: 10px;
        }
        .center-middle3 {
            width:450px;
            height:30px;
            margin-bottom: 10px;           
        }
        .center-middle4 {
            width:650px;
            height:25px;
        }
        .center-right {
            width:190px;
            height:400px;
            float:right; 
        }
        .bottom {
            margin-top: 10px;
            width:970px;
            height: 35px;
        }
    </style>
</head>
<body>
    <div class="main">
        <div class="top">
                <div class="top-left red"></div>
                <div class="top-right1 greenyellow"></div>
                <div class="top-right2 greenyellow"></div>
        </div>
        <div class="center">
            <div class="center-left yellow"></div>
            <div style="margin-left:320px;">
                <div>
                    <div class="center-right pink"></div>
                    <div>
                        <div class="center-middle1 turquoise"></div>
                        <div class="center-middle2 turquoise"></div>
                        <div class="center-middle3 turquoise"></div>
                    </div>
                </div>
                <div class="center-middle4 green"></div>
            </div>
        </div>
        <div class="bottom blue">
        </div>  
    </div>
</body>
</html>

成果图：