I've seen a lot of posts about trying to create a marquee section similar to the one on Cuberto's home page. I'm trying to recreate the marquee but the animation seems to "jump" when looping. I'm thinking my math maybe off in the modifier callback?   EDIT: Inspecting the dom elements it seems the row items are overflowing the row slightly possibly because of whitespace generated from using inline-blocks. See the Pen gOgwzpw?editors=0010 by connorhansen (@connorhans