<!DOCTYPE html>
<p>Test that adjoining margins on adjacent spanners collapse.</p>
<p>There should be a blue square below.</p>
<div style="width:10em; height:10em; background:blue;"></div>
<!DOCTYPE html>
<p>Test that adjoining margins on adjacent spanners collapse.</p>
<p>There should be a blue square below.</p>
<div style="width:10em; height:10em; background:blue;"></div>