<!DOCTYPE html> <!-- webkit-test-runner [ internal:LayoutFormattingContextEnabled=true internal:LayoutFormattingContextIntegrationEnabled=false ] -->
<html>
<body>
<div style="margin-top: 10px;"><div style="width: 10px; height: 10px; margin-top: 20px;"></div></div>
<div style="margin-bottom: 10px;"><div style="width: 10px; height: 10px; margin-bottom: 20px;"></div></div>
</body>
</html>