Qr-code-component using flexbox

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

Using flexbox and not looking at any solutions

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

Some interaction issues with the various flexboxes

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

I would like to know if I have good coding or if I should change some things for future solutions. Thank you :).