Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Base styles are CSS styles for HTML elements.
The 'Range' in the menu list item element sets which list items at the current level the settings should apply to.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.
Not yet. The Style builder does not have the option to add an animation name or key frames. This is planned functionality on our road map.