Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Base styles are CSS styles for HTML elements.
We recommend using decimals e.g. 1.3 as this makes the line height relate to your font size.
You don’t have to add units unless you want to use a specific unit or you’re adding Custom CSS properties.
Yes, the component link field supports both internal and external URLs.
You can use Elements to create content but we don't recommend doing so for multiple reasons.
Yes, this is possible by creating a custom element.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.