Under construction/404 Pong SVG animation

Experimenting with "CALLBACKS & PROMISES" in animejs. Was super fun animating this one! In this "under construction/404 page" animation concept I'm using multiple timeline animations and those 2 cool functions: changeBegin() callback is triggered every time the animation starts changing. changeComplete() - callback is triggered every time the animation stops changing. check out the codepen: https://codepen.io/Ilyatsuprun/full/xxKrMWw