Using simple 'Animate Item' and 'Show/Hide' interactions to have the boxes disappear and realign accordingly. Can be used as a base on how you can build notifications or lists to realign themselves.

Using the Carousel default Pattern in Proto.io. I use a few screen interactions to turn it into an Autoscroll Carousel. Design Credits to: https://www.sketchappsources.com/resource/download-3665.html