This only refers to the Animista site itself, not the actual animations.
CSS animations work, any individual browser bugs notwithstanding. The nice thing about this site is that you don't have to guess all the CSS `@keyframes` and `animation` parameters to match some vision in your head, but you can visually experiment.
The actual value of this site is the interface, and I can see why it would be hard to make it work specifically for mobile devices.
> Mobile version is unavailable at the moment. To experience Animista try it on your desktop.
The text is unselectable on mobile as well.