For my site a version 7 site, I was seeing the elements in my code show outside the container for the code block I was using.
So I used flex-wrap: wrap; in my css code for the full screen view and all the elements are now in the container and showing stacked correctly.
I know its a small thing but I am using media views and this took care of the full screen view.:
https://www.w3schools.com/cssref/css3_pr_flex-wrap.asp