I have made a horizontal carousel of images (and captions) using Twitter Bootstrap 4 and the perfect-scrollbar plugin. Here is a jsFiddle with what I did so far. The carousel allows navigation with the mouse wheel. I am not satisfied with the smoothness of the transition when using the mouse wheel. I want it to be more like ones on this page. The problem: I have not been able to identify the elements o target with CSS and the most appropriate set of rules for a smooth transition.