https://codepen.io/ainalem/pen/ZaMQdK
https://tympanus.net/codrops/2017/05/23/on-scroll-morphing-background-shapes/
https://codyhouse.co/gem/morphing-modal-window/
http://codepen.io/iamjoshellis/pen/wJdvrL
https://tympanus.net/Development/DistortedButtonEffects/
