Page content displays narrow on mobile

Site URL: https://www.isaacbower.com/

Hi I have a issue  on my home page: when I  scroll down, it displays more and more narrow. Much worse on mobile.  I asked customer service and they said it looks ok in safe mode and that indicates custom code is the issue. I have a few bits of code in place that I want to keep, not sure how to figure out what the issue might be. In the screen shots (from my phone) the wider one is fairly normal, but the other one is from down at the bottom of home page. There are a series of image cards as you go down the page and this issue is making them appear narrower and narrower as you scroll down the page. It’s visible but more subtle on a laptop. In this same area of the site, I’ve had an Intermittent issue where the lines I’ve added between some of the image cards will suddenly display cropped off - only on the right side. I loose about 20% of the width of the lines. Then if I sign out and reload page, it sometimes fixes that. But not always - I found that if I delete one of the cropped-width lines and then put a new line back in its place, then all lines will be normal length again after reloading page. Not sure that’s even related to the other width issue but seems like it might be. Thanks for any thoughts on this. 

It looks fine to me. Did you solve it?