Responsive Four Card Feature Section with CSS Grid

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

i used var local scope vars for colors as kevin powell suggests https://www.youtube.com/watch?v=_2LwjfYc1x8&t=1s

pretty cool)

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

i wanted to have 3 columns with 1, 2, 1 items in them with a single row. for mobile - just stack them on top of each other, for desktop - just present them as columns.

however, i couldnt make 3 columns with different amount of rows in each one.

so i have just 2 central items in subcard container. next time i would like another attempt for solution without subcard container.

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

colored border radius on top of cards have tiny curve that i would like to get rid of. any ideas, guys?