Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
The 'Range' in the menu list item element sets which list items at the current level the settings should apply to.
Yes, you can render react components.
Yes, this is possible by creating a custom element.
If you want to add custom code to your website you can use Field formatters, Blocks and Custom Acquia Cohesion elements.
No site specific data is stored on the API.
Drupal content field data is NOT transmitted to the API. Only the underlying JSON schema and any information hard coded into templates and styles is transmitted.
The Youtube video embed is responsive so it should expand to the width of its parent. If you do need to set a width you can apply the Width CSS property through the Style Builder.