Tricky div

Hello there,

I have a small problem in a html page, everything works ok but one div seems to look different that it should.
Firstly I mention that the page works fine in Internet Explorer, AM Browser, but the issue is on Mozilla Browser.
Please visit this adress: http://gabriell.sufx.net/ges/about-us.html

As I said, only in Mozilla you can noticed that the div that has a blue background color spreads to the right margin even if it shouldn’t.

I looked over the debugging websites showed in the thread but I don’t need other software installed on my pc.

Thanks in advance! :wink: