Four card feature section with CSS Grid

Grid is cool to play with, took sometime for me to get this very challenge done, had to revisit some sources and learn some new tips and how to make everything work, happy I got the results I have now.. Will be playing around with Grid more often from now on

Had some challenge defining the rows, I was seeing the layout structure but wasn't sure about how best I'd define the rows lol, especially after I watched a youtube video of Kevin Powell about grid tips where he said a thing about 'not explicitly defining rows unless there's a need to'.. So I was like seeing the rows structure there and how I could span card1 and card4 through row 2 and 4 but was kinda unsure and rethinking other ways I'd get it done without explicitly defining rows, I tried defining my rows after sometime but again my results were coming out bigger than the original layout rows because I used repeat(5, 1fr) so I kinda looked closely and thought I could bring the 1fr down a bit since it was bigger than the original layout, so I settled with px.

Still unsure if defining my rows with a fixed unit (px) was a good decision but I'd love to hear any tips or ways to make anything better, if at all there's any