Tea Cozy Navbar issue

This is my first time posting here. Currently stuck on the Tea Cozy challenge project. When I resized my browser and tried to scroll up, the picture is not covered by the navbar. I tried setting the navbar to position fixed and z-index to a high number but it still is not covering the content on the page like a fixed navbar would.

Here is the code I have so far if anyone wants to take a look at it and suggest things I can do to fix this issue or improve the code I have already written. GitHub - brent436/teacozypractice

Thank you in advance,
Brent

Please disregard the post. I figured out the problem.