CSS text formatting in Flash (Mac issues!)

Hello- I seem to have a problem using CSS and getting it to remain consistent on a Mac. As far as I know on my PC it’s working fine (unless I just haven’t experienced the random change yet!) If you visit the pages of this site: http://www.tricoast.com/home.htm and click around the navigation, the css seems to lose the formatting sometimes. My css file is at www.tricoast.com/default.css and an example of a text file using it would be for the home page www.tricoast.com/home.txt Does my css and txt file look like it’s formatted correctly? I’m baffled. Thanks, Mark