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, you cannot layout forms with Acquia Cohesion.
You can style tables or forms through the use of base or custom styles.
Yes, this is possible by creating a custom element.