<!DOCTYPE html>
<html>
<body>
<div style="position: absolute; left: 10px; right: 30px; height: 20px;"></div>
<div style="position: absolute; width: 100px;">
    <div style="position: absolute; left: 10px; right: 30px; height: 20px;"></div>
</div>
</body>
</html>