QR code component using HTML and CSS

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

Well, it's a small project, I did it by one take. Next time I want to use again SCSS and color variables.

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

I forgot some details about centering and footer positioning, but googling always helps.

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

Any feedback is welcome and this time I will be glad to know how to improve work with styles.