<!DOCTYPE html>
<p>On this page there should be a blue square above a yellow square.</p>
<div style="margin-left:150px; width:200px; height:400px; background:yellow;">
<div style="width:200px; height:200px; background:blue;"></div>
</div>
<!DOCTYPE html>
<p>On this page there should be a blue square above a yellow square.</p>
<div style="margin-left:150px; width:200px; height:400px; background:yellow;">
<div style="width:200px; height:200px; background:blue;"></div>
</div>