Intro section with dropdown navigation

What specific areas of your project would you like help with?

It's been almost 3 days doing this challenge. It wouldn't take this long if I haven't encountered a specific problem.

The Problem: I had this problem when I had to use position: fixed; in the navbar which I didn't want to use as it is a landing page and I was trying to center the content but to do that I had to use position: fixed; in the navbar.

I would really appreciate getting any help regarding this problem.