Answer 1

The link you provided does not lead to your code. And if you want to style your webpage you have to learn CSS.

Answer 2

Save some time learn how to create navigation bars from here.

https://www.w3schools.com/css/css_navbar.asp

Answer 3

I find it difficult to picture what you're trying to do. Maybe you could upload a pen and paper sketch? You can post it in your feed and link to it here.