Keep formatting consistent from laptop to full size 4k monitor

please tell me this is possible? 

you'll see my site looks fine if the browser window is smaller - on a laptop for example. 

As a full size window though, on a 24inch and larger monitor it all changes. See screenshots.

How do I keep it the same from size to size?

Ideally, I want it to look like the bottom screenshot. All in one neat flow