How to animate a list of items with acceleration?

Question

css

Hello, please tell me how to achieve animation like in roulette on csgobomj.ru every three minutes, a list of avatars of participants appears there and starts to spin slowly, spin quickly and slowly stops.
Is this due to animation-timing-function in css or ?
Here I made pen .
Suppose there is a list of 5 elements long. I need it to scroll for N amount of time and then slowly slow down and scroll to the index of a certain element. Tell me the logic please.