Responsive 3 columns preview - grid, flexbox and simple animation

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

my first animation and improvement of litte other things.

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

keeping the 3 buttons as the same level (in 3 differents divs) : i use flex-grow. I keep trying over and over to get the correct parameters, especially when the page dimensions are downsized.

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

Is there any solution (like components ?) to deal with repetition (3 divs with the same elements that only differ in text and colors)? Any code optimization suggestions? Thanks to all.