QR Code challenge with basic HTML & CSS

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

I learned theory via freeCodeCamp, CodeCademy and some YouTube videos. I arrived at a point where I tought I konw quite a bit about HTML and CSS but when I tried to make a web page on my own it didn't goes well ! So I've done some YouTube research again to build a website from scratch and I've landed on Coder Coder YT chanel that made me discover Frontend Mentor. I think that it is exactly what I need right know to practice what I've learned.

So here is my first submission, let me know what you think about my code ! Thank you !

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

Here is what I learned during this project:

Using Figma to get the project's sizes of the elements and report them in my CSS file. Use the calc() function. Center verticaly a block element with the translate() function.

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

Somewhat I struggle to have the .attribution class centered when I want it at the bottom of the page, any help would be appreciated !