¡Olá Amigos!
Attached is: Machinery 4.hype.zip (1.3 MB)
The “Machinery 4.hype” file uses only timelines (no coding, timeline actions, Additional HTML Attributes, etc.) to achieve the same look as those files~presentation in this thread; of course one can do a lot more with the code version if desired, but the effect as presented by the OP is the same.
I created this Hype project (based on the project in this thread) for a "Getting Started - Relative Timelines" topic - You can read the full post here.