Is it safe to run 'composer update' on my Lightning and Site Studio site?
Running the composer update command will update any composer packages that have newer versions available.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
No. Helpers are coupled with the page once placed. Changes to the Helper layout will not affect existing instances.
The 'Range' in the menu list item element sets which list items at the current level the settings should apply to.
If you're removing styling from a base style, those styles still apply until you have saved the base style.
Base styles are CSS styles for HTML elements.