CSS Responsive Grid

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

I've manages to make it work without using any platform to help me make it responsive, Only thing I didn't do is continue with CSS Grid, instead I used Display Block to make the columns vertical on mobile devices.

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

At first it was hard to create the grid in the layout, since I never worked with CSS grids before, after some research I rewrote the content I found on stackoverflow to make it alike with the layout. I think I made a small error since on mobile the boxes are in a different order, and I am not sure how to fix this now, any feedback would be appreciated !

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

Any blog, article, youtube video or link that explains CSS Grids in a easy to understand way