I am currently searching for a way to implement a "tutorial mode" using code or OS features similar to what is seen in mobile games. Essentially, after clicking a button, the user would enter a tutorial where the background darkens and each step highlights a different aspect with an explanation, much like the concept depicted in this image I created (link attached). https://i.sstatic.net/bL1ya.jpg
I have been unable to identify the correct term for this feature or determine how to execute it (potentially utilizing CSS). Any assistance on this matter would be greatly appreciated.