That worked & had no effect on the size of my "Navigation" div in either EI or Firefox like the original suggestion did. I tweaked it to:
And it looks great.
Thanks for the help. Everything I've learned about HTML, CSS & site design has come from months of research & study of online tutorials. It about drove me mad but things finally started to click and I was able to come up with the admittedly very basic designs I have such as the one shared here. There are times though, like with this issue, where I just can't solve the puzzle and feel like my brain is going to melt from the effort. Finding this community forum is a Godsend. I expect I'll be back more than once as I continue to build my site.