Responsive Four Card Feature Section sass and css flexbox

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

I'm really enjoying working with itcss + sass.

Next time, I believe I would focus on using a greater number of utility classes

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

Working with responsive grids is very difficult, however, when reading some documentation that goes into great detail about both flexbox and grid, it is possible to do a satisfactory job

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

I think it would be interesting to receive feedback about itcss and flexbox