Solution for Four card feature section

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

I am proud of my entire work, and of my website responsiveness.

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

At first I didn't know how to position card elements, but later I've remembered that I can set position relative to cards element and then set position absolute to each card element, after that I was able to position each card with top, bottom, right, left attributes.

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

None, but any feedback is welcome.