<!DOCTYPE html>
<html>
<head>
<style>
</style>
</head>
<body>
<div style="border: 1px solid red; height: 500px; width: 200px;">
<div style="height: 200px; width: 10px; border: 1px solid blue; float: left;"></div>
<div style="height: 170px; width: 10px; border: 1px solid blue; float: left;"></div>
<div style="overflow: hidden; height: 100px; width: 180px; border: 1px solid green;"></div>
</div>
</body>
</html>