space between content boxes expand when preview in broswer

[cbleep]

here is how it looks when its in dreamweaver

http://img253.imageshack.us/img253/6556/43072861iz6.gif

and here is how it look when its in firefox

http://img253.imageshack.us/img253/5143/88276724ou5.gif

[jscheuer1]

I'd tend to trust FF. One thing though, different browsers see the default margins on things differently, so I'd try it out in IE too. But FF usually uses less margin. So, again, I'd tend to trust FF.