Код:
<body style="margin: 0;">
<div style="background: red; width: 700px; height: 300px; top: 50px; left: 150px; position: relative;"></div>
<div style="background: blue; width: 700px; height: 500px; left: 150px; position: relative;"></div>
<div style="background: yellow; width: 450px; height: 600px; left: 400px; top: 200px; position: absolute;"><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p></div>
<div style="background: green; width: 700px; height: 60px; left: 150px; position: relative;"></div>
</body>
Вотрезультат налицо
