When I open the layout in Safari the tabbed navigation moves up by 1px. I think it's because of the way Safari renders the font differently from other browsers.

I need to somehow align the tabs to the very bottom of the div so when the tab text get smaller or bigger the tabs do not move.

Here is the example:

Thanks to Paul O'B for making his CSS layout available for reference.

I would appreciate any help or guidance on how to improve the tabbed navigation issue.