Formatting on Grow Theme Broken?

I am a volunteer for Western Border Collie Rescue. I host and keep the website updated. Sometime between today and three weeks ago, the formatting got messed up. I am the only one with access, and I did not log in in the past three weeks to make any changes. After I was made aware of the issue, I updated all my plug-ins, but that did not seem to have any effect.

What shows in the visual editor looks fine, but what shows in the preview (and real site) is full of weird spacing issues. What’s also strange is when previewed, the correct formatting flashes for a second and then it goes all wonky. Here’s a video: https://www.youtube.com/watch?v=QWSyJ6SbKWA

The issue is on all pages, so it’s not specific to the page that I regularly update (the “Adopt” page)

The page I need help with: [log in to see the link]