I have used a DW Layout css - twoColFixLtHdr.css.
The first item in the right hand column div(maincontent) is div flattext. I have put a background colour on this which is overlapping the menu bar in the header div, in Firefox.
In IE it is ok.
I have tried everything I can think of and wasted two days on this problem.
Help would be so appreciated. (I need to know what to try and why it is happening)