Responsive page using Flexbox

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

That's not a big project, but overall, it gives some basic practice and the most valuable thing I got here is some practice with colors and with both box and text shadows.

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

Mostly nothing, but fixing shadow of both text and box were educative and useful for future!

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

Overall opinion, is it good enough or something is wrong with my try :D