Customized Atahualpa layout problem in Firefox

Hello,

I’ve made some customizations to Atahualpa theme and the layout is not displaying correctly in Firefox. It seems to be displaying ok in other browsers. I’ve done a lot of troubleshooting and it looks like the remaining problem is that the “logoarea” table is too wide, and is throwing off the rest of the layout.

Here is the site:
https://www.catherinegeorge.com/cybermill

Any help is greatly appreciated, thank you!!!