Four Card Feature Section

Hi. I'm not very proud on this one. I'm facing two issues :

1. Not responsive. I didn't now how to position the cards this way so I used position: absolute, and flexbox aren't flexible anymore. It just changes the way it displays if screen width is less than 1160px. I'm still wondering how to position it the right way.

2. I used "::before" to color each box but did not find a way to do it without rewriting the same piece of code four times.

Good luck to everybody on this challenge.

Edit : Changes have been made and everything's working good. Many thanks to you !