Responsive page with flex-box

What are you most proud of, and what would you do differently next time?

I'm proud because this was one of my firsts projects done by myself. Next time I'll try to use more classes than id's.

What challenges did you encounter, and how did you overcome them?

I faced challenges with the tiny details, but now I know better how to deal with it. Every challenge I go trought I feel confident to do the next one.

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

I'd like to see reviews about my code, I know I have a lot of areas to improve, so feel free to help me.