Stats preview card component using CSS flexbox.

Hello friends, This is my first project at the frontend mentor and very new to the git and GitHub things, feeling scared but also excited about these new things. Although this project seemed to be very easy in the beginning, as I was working on it I faced some problems. Could you help me with them? How to make the height of the background image equal to the size of the main card? and anything you found wrong, or not good, please aware me of that. And first time writing the README file, don't have many words to write.