Four card feature section

I struggled with creating media queries for the desktop site, the calculator div disappears to the right when I change screen sizes, when I am using site inspection mode on chrome the containers shrink nicely but when in normal browsing mode it the responsiveness is a bit poor.

My top div with the heading and paragraph also first shifts to the left when I make the screen size smaller and then snaps back to center.

Some assistance of resolving these issues would be appreciated. :)