Editor text looks ok but is rendered completely differently

Using Acquia Marina (Fusion/Skinr), The HTML output is missing style tags. The carriage return option is set to
.

The editor source looks like this :

<span style="font-family: verdana,geneva,sans-serif;"><span style="font-size: 18px;">text</span><br />
<br />
more text<br />
<br />
even more text<br />
<br />

But this is what ends up in the browser:

<p>text</p>
<p>more text</p>
<p>even more text</p>

So the font, and the font weight are wrong.