Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Yes, you can build mega menus using Cohesion. Building mega menus requires advanced knowledge of jQuery in Acquia Cohesion and CSS.
HTML is escaped when using Drupal tokens in Site studio as a security measure, this follows Drupal core.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.
The WYSIWYG (ckeditor) adds a paragraph tag around the text within the block quote. This causes it to inherit the text size of your paragraph base style.