Responsive Testimonials page section using Grid, Flexbox, Css

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

First time working with grids!

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

The challenge was to understand how to position objects on the grid and make it responsive.

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

I would especially appreciate improvements to make the design responsive. Also any suggestions of good practices are realy important to me.