4th project rwd

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Describe your issue in detail here.

This is the fourth project for the Responsive Web Design. I’ve been doing the MDN course too and it has helped me a lot, but of course, I still need practice. I want some feedback, and also if someone knows why the nav has a gap on top and could tell me, that would be great! Thank you.

Your code so far

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Challenge: Build a Technical Documentation Page

Link to the challenge: