<!DOCTYPE html> <!-- webkit-test-runner [ LayoutFormattingContextEnabled=true LayoutFormattingContextIntegrationEnabled=false ] -->
<html>
<body>
    <div style="width: 20px; height: 20px;"></div>
    <div style="position: absolute; left: 20px; top: 20px; width: 20px; height: 20px;">
        <div style="width: 20px; height: 20px;">
            <div style="position: absolute; left: 50px; top: 50px; width: 50px; height: 50px;"></div>
        </div>
    <div style="position: absolute; left: 0px; top: 100px; width: 20px; height: 20px;">
        <div style="width: 20px; height: 20px;"></div>
    </div>
</body>
</html>