Struggling to order nav list into horizontal nav bar

[RT_]

How do you want it to come out?

It sounds like this thread might help:

Is it acceptable to post a HTML/CSS file that others may find useful?

I have spent some time trying to figure out why it is so difficult to center a nav bar. I searched the web and downloaded some examples that claimed to be centered. After some checking, everyone I found was not centered as advertised. So, I decided to see if I could figure it out on my own and made good progress. So, if someone can let me know where to post this info - which BTW, is simply a codepen link, I will do so. Thanks!