QR code component challenge. Bem, Semantic HTML, Flexbox

Hello everyone! I have just finished my first challenge. It's been very, very interesting to see how much I've learned from such a small exercise.

Following the logic I use in Figma with Autolayout, I tried to size the board through its contents, and not by giving it fixed dimensions. I don't know if this is correct: if anyone has any suggestions, they are welcome!

I hope to get your feedback so I can keep learning!

PS: Thanks again to @0xAbdulKhalid. Just by studying (and copying) the code of your exercise, I have learnt A LOT