Vanilla QR Code component

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

I already had a good understanding of front end technologies but my FE designs have always been bad. I'm glad to see that's only because of my non existent UI/UX skills and that with a few instructions I can accomplish some decent results (Although it might still be a bit too early to confirm it and I should see with more complex challenges lol).

I'll try to do some other challenges using HTML/CSS/JS to feel more confident and later I'll move to Tailwind and ReactJS.

Also I should try timing myself I guess.

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

I kind of improvised with units and their measurements so any tip is welcome ^-^"