Denys,
Thanks for this information (you should put this information in the CSS customization information. It will save you'll a lot of work)
Please confirm the following:
1. Basic.css - if changes are required here WildApricot has to do it?
2. Theme.css - if changes are required here WildApricot has to do it?
3. CustomStyles.css - if changes are required here WildApricot has to do it?
4. User.css - I can also change it with any editor and load it back via WebDAV?
I am being specific because I am sure that others on the forum probably could use this information ;-)
There is never a bad day when you are surfing, in the ocean that is...