Four Card Feature Section mobile first

Hello. I think i've nailed the challenge, although there's one thing that's bothering me. For whatever reason, the h2 in calculator card is higher than h2 in other cards. They all have the same line-height and font-size which results in the calculator card being higher than the others.

Second thing is, i couldn't have done the box-shadows, i just for some reason can't hit the numbers to come close to what was done in the design.

Looking for advices on the things that i've listed and anything else that You think that could be improved, from html markup to css!