Stats preview card component solution using Sass

I did my best to reach the design, I think I did great so far. It took me more time I expected to finish, when creating this I took Mobile First approach. This is the first time I tried Mobile first approach, it looked hard at the beginning, but I realized that this is the better way designing website. So when taking Mobile first approach we must have good understanding about how min-width, max-width works, To understand those concepts took me so long. Please guys check my code and leave a comment areas I should learn more. thank you