Hi Fabian, I am in the middle of the challenge and need a hand with the background of the card, I explored a bunch of ways to do the radial gradient but nothing works for me, I saw your solution and you gave me the hand I needed.
About your first question, I'm using divs instead of spans, which I suppose isn't a bad practice one or other, but I hope you get feedback from some one with enough knowledge.
Great job man, keep working!