So, the issue is that CSS transitions only handle CSS attribute changes. For example, if I apply a CSS attribute like `transform: translateY(100px);`, I can eas

So, the issue is that CSS transitions only handle CSS attribute changes. For example, if I apply a CSS attribute like `transform: translateY(100px);`, I can easily animate that using CSS. When an item's DOM position changes, there's no CSS change to animate. You can throw a `transition: 1s` on it, and nothing'll happen. This is the distinction between moving an item around on-screen, and removing/appending a DOM node from one position in the tree to another. For Flip Move: I actually do use CSS transitions to accomplish it, but through trickery known as the FLIP technique. You can read all the nitty-gritty details, if it interests you, in a blog post I wrote: https://medium.com/developers-writing/animating-the-unanimatable-1346a5aab3cd#.xns3ia1u9 https://medium.com/developers-writing/animating-the-unanimat...