Just for the record, I was the one that messed up the styles. So if anyone is to be blamed, it was me. I reverted some templates that have gotten messed up from some faulty add-ons and made some changes to other templates to fix some problems I came across. Problem is (Unbeknownst to me at the time), how XenForo works, it creates a template cache to speed up processing the styles on page load. So by reverting a template, it messes up the cached version and a new template cache had to be regenerated. To do so, the style needed to to be updated again so all the template modifications from the add-ons and options are cached again in the template cache. This is what caused the problems @TheyCallMeTim13 and others experienced. I didn't have access to the styles so I asked STN when he had the chance to update them to fix the problem I created. I would like to apologize for any inconvenience I caused. I was trying to make the forum more stable and a better experience for everyone.
Thank you again @STN for your help. I learned my lesson, from now on before I do anything major or may have detrimental effects on the site, I will consult you first.