Social links profile using flexbox

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

I'm proud to be making good progress on project after project.

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

Responsiveness. I had to research to make my project responsive.

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

I want help with responsiveness. For instance, I don't know when to use max-width and max-height in general. I will appreciate any help.