How to animate active slick slider?

Question

JavaScript

Need animation for active central slider. When the slider is initialized, the animation does not work for some reason, the first time I switch the slide, the animation works on it, but the next time I scroll back and forth, animations also start working on neighboring elements. ( 2 and 1, then 3, 2 and 1) How to make the animation always work only on the active slide, but not on others?