What units do I add after a value in the Style builder?
You don’t have to add units unless you want to use a specific unit or you’re adding Custom CSS properties.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
You can only add combinators to child selectors. Add a child selector and combinator will appear in the Style tree.
No, the entity browser does not work for component defaults as the entities are content, not config.
You don't. You apply a Descendant selector. These use a (Space).
No site specific data is stored on the API.