How to implement a lottery?

Question

css

Task:
There is a list of 100 people
. There are 2 buttons. By pressing the first button, it starts, the second one stops
Start:
Infinite scrolling begins: elements go up off the screen, and are added down (in fact, an endless scroll)
Stop:
Smoothly (ideally) this lottery drum stops and the selected person will be in the center. It should also have a handler later on.
This can be done using css keyframes, but how to implement stopping the animation on request in the right place and get the selected person?

Answer 1

https://github.com/josex2r/jQuery-SlotMachine