Intro Section With Dropdown Navigation (challenging but rewarding)

Hi everyone,

It's been a while because this challenge was quite difficult for me. I've finally finished (and very proud of myself hehe). Please take some time to review my solution. I'd love to receive as many feedbacks as possible.

One thing I noticed is that, when on a few specific mobile devices (iphone SE, next hub, and galaxy S8+), the overlay effect acted weird. There was a white part at the top of the page. This doesn't happen in other mobile devices though. Any help on this issue would be greatly appreciated.

Any other feedbacks are welcome. Thank you in advance!

Happy coding :)