All elements can be animated by adding transitions to them that will be run at the start and end point of an elements duration.
There are several neat predefined transitions that you can use right of the bat. Transitions can be modified as well as created from scratch, although, this function is still in beta so keep that in mind.
How to add a transition to an element
1. Click on the start or the end(the darker parts) of the layer to bring up the transition menu.
2. Select a transition from the menu and then just click anywhere else.
3. The element you applied the transition to will now have animations when the banner is playing.
The transition duration can be adjusted, both at the start and at the end. It's duration is by default 0.5 seconds.