This simple prototype demonstrates how have a container expand and collapse while moving adjacent content in sync.

Here's a demo showing a basic color picker using a container with 4 states for both the colored star and the color swatches.

Proto.io comes with UI libraries for iOS, Android Material Design, Windows and Apple WatchOS so that people can easily drag and drop those elements to bring their ideas to life. Simple interactions can also be applied, primarily screen-linking and basic navigation.