How do I add a combinator to my style?
You can only add combinators to child selectors. Add a child selector and combinator will appear in the Style tree.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Color tags allow you to create groupings of colors based off of the color tags that you define in the website settings color palette.
You don't. You apply a Descendant selector. These use a (Space).
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.
Modifiers allow you to apply styles to an element when a specific class, id or attribute is present.