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. Component content entities do not have view modes.
The 'Range' in the menu list item element sets which list items at the current level the settings should apply to.
Yes, this is possible by creating a custom element.