Store: Products stuck in one column

Site URL: https://www.aoglass.com/store

The store page on our business website recently changed to a stacked column list of products, rather than 4 columns across that we've always had. I've tried adjusting it in Site Styles, but it isn't having any effect.

I can't find anything else in Site Styles, Code Injection, or anything else. What am I missing?

Fixed! Thank you @creedon