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.
Running the composer update command will update any composer packages that have newer versions available.
Yes, the generated templates can be saved to the database.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.