Four Card Feature Grid layout

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

I was able to use grid to get it to be responsive as well as set card sizes without setting fixed widths and heights. Also used rem for everything instead of px.

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

I didn't find anything particularly challenging. I felt that I improved on setting the card sizes without using fixed sizes.

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

The one thing I found difficult was setting the responsiveness for mobile. I had to set a fixed width to get the cards to be the same width when stacked on top of each other with flexbox. Is there a better way I could have done this without setting the fixed width?