QR Code component using pure CSS

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

I am proud of learning all of the essential HTML and CSS knowledge after months of taking breaks from coding.

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

I struggled with how to centering all elements as well as the whole page. I finally set the maximum height of the html and body tags to 100%, then used flexbox on all components with justify-content and align-items being center

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

As of know, probably with how to make the shadows only appear on mouseover.