Sidebar pushed to bottom of page in Safari on first load

Bizarre error – when my website is loaded in Safari for the first time, the sidebar is often bumped from it’s normal position on the right side to loading directly beneath the main content area. This happens both on the main page, and on single post views. A refresh and everything is in order. Clear the cache and the problem appears again, reload and it’s fine.

I’m used to seeing this if some certain post/title/image is too large, but a refresh does not usually correct that. I’ve tried tweaking margins and sizes all over the map but i can’t seem to figure out what it is that’s causing this problem. Any help would be appreciated!

https://www.collegegamer.org