Why aren't my base styles updating in the preview?
If you're removing styling from a base style, those styles still apply until you have saved the base style.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Base styles are CSS styles for HTML elements.
No, the entity browser does not work for component defaults as the entities are content, not config.
Modifiers allow you to apply styles to an element when a specific class, id or attribute is present.
Custom styles are CSS styles for classes.