Four card feature Grid Mobile-First

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

I'm proud of the faithful design and the use of CSS Grid.

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

I initially tried to design this with Flexbox, as I considered this a column-only layout, where I could use align-self to center the two outermost boxes. However, I found that my ability to adjust the layout based on viewport size was really compromised, I had little control. I thought I could use flex-shrink and flex-basis to help me, but I didn't figure this out. Once I did some research, I saw that most other devs used Grid for this challenge, so I thought I'd try it. Once I did, it was much easier.

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

Are my cards too big? How would I adjust them to suit this flexible layout if so?