I am in the process of upgrading a load of sites from 10.6.1 to 10.8.3 (not Cloud). As part of this I am upgrading uSync and Forms and any other packages as I come across them. One site today has nothing in Nuget for Forms, nothing in .csproj file, although it is definitely there in the site, plenty of forms and entries. Not sure how it was installed in the first place? I installed it locally anyway and it seems like the actual forms and entries are still intact - so first question, how would this have been installed, and is there anything I need to be aware of having "installed" it now after the fact?
Also my new forms, while they're the same, have incorrect styling. I know we always update the styling via App_Plugins/UmbracoForms/Assets/themes/default/style.css - but I can never find this locally. I end up having to download from the published site, change and upload again. Is there somewhere I can edit this pre-publishing?