[Webpro] CSS table-less: IE gap below picture

[Mike S. Krischker]

Hi all   :)

Can anyone tell me why in IE the picture in the grey box has a 10px gap 
below it?

https://www.muinar.com/thm/admin3/projekte/050126/home.php
https://www.muinar.com/thm/admin3/projekte/050126/einfamilienhaus-laufen.php?s=5

The picture is floated left. Taking out the 2nd picture at the right side
doesn't help, as you can see in the 2nd link above.

Thanks a lot for any hints...

Mike