Prototyping Animating Text Sizes

One really nice feature of Principle is that you can have text size changes animate smoothly from state to state. This example crudely simulates the float label pattern (http://mds.is/float-label-pattern/) originally created by @Matt D. Smith.

This took me 20 minutes to build, and this was the first prototype I played with in Principle. Speaks to the ease of onboarding.

Get the Principle file (.prd), video, and screenshot of the editor here:
https://drive.google.com/open?id=0B3isBusa5v-LQVBXU1VlQ3R6SUU