This is a component for animating some content between two different containers with absolute positioning and sizing,
with two different modes for scaling the content inside of it: contain or cover. All scaling does not affect the
aspect ration of the original content (as given by naturalSize prop).
To run the demo, clone the repo, run npm install and npm start. The small container has a fitMode of cover,
while the large one has a fitMode of contain. As you can confirm, the white dot keeps the original size besides
the scaling being applied, this is done through the scalingFactorCompensation parameter passed to the renderContent
render callback prop.