CSS changes appear in the preview but do not appear once enabled. Once I remove the preview the CSS changes revert to default. I have cleared my browser data and checked on multiple devices, but it seems to be a problem with my installation of discourse.
Experiencing this same issue, was there a solution?
Preview CSS -> User Global CSS is a manual operation. Please (I know this may seem irrelevant, but go through the steps) try (or at least read) this lot and see if it fixes what your problem is?:https://meta.discourse.org/t/are-html-body-css-changes-ignored/18788?source_topic_id=18053
If you have more than one customisation enabled, this might be the problem… https://meta.discourse.org/t/multiple-site-customisations-at-once/14663?u=thelonecuber.