Frontend Mentor QR-code Challenge

Although I have been learning HTML and CSS for a while, I felt most of my coding experience was through tutorials. I wanted to escape tutorial hell, so this is one of the first times that I have built a project from scratch. I chose a simple challenge first so as to not get demoralized and over-confident, but I still ran into some challenges that I had to google search while building this. More specifically:

1. How do you center an image in a div (I found myself calculating the values manually for the padding-top so the spacing looks even all around the 4 edges of the image, so maybe there is an easier way to resolve this)
2. How do I check what fonts/colour codes are used in the final solution preview? I ended up using colour hunt to get the rough colour but I am slightly colour deficient LOL

Overall, good challenge and I am excited to try more challenges in the future and escape tutorial hell!!!