<div class="z">
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  
  
  
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <b class="r"></b>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <span class="r"></span>
    </div>
  </div>
  <div class="x">
    <div class="y">
      <p class="r"></p>
    </div>
  </div>
</div>
:root {
  /* transform properties that will be updated via JS */
  --x: 0;
  --y: 0;
  --z: 0;
  --r: 0deg;
  --rotation: var(--r);
  --scale: .875;
  
  /* the four separat parts of the x and y cubic beziers */
  --cubic1-1: .85;
  --cubic1-2: .18;
  --cubic1-3: .44;
  --cubic1-4: 1.2;
  
  --cubic2-1: .75;
  --cubic2-2: -0.35;
  --cubic2-3: 0;
  --cubic2-4: .9;
  
  /* if advanced calc is supported, this will be used to give an additional easing variance to each item in the stack */
  --cubic1-change: 1;
  --cubic2-change: 1;
  
  /*treated like Sass/LESS variables */
  --primary: hsl(156, 70%, 60%);
  --secondary: hsl(203, 70%, 60%);
  --dim: 6vmin;
  --duration: 3200ms;
}
span, p, b, i {
  display: block;
  width: var(--dim);
  height: var(--dim);
  border-radius: 10%;
  background: var(--primary);
}
.x:nth-of-type(2n + 2) .r {
  background: var(--secondary);
}
div {
  will-change: transform;
  transition: transform var(--duration) ease-in-out;
}
.x {
  transform: translateX(calc(var(--x) * 1px));
  transition-timing-function: cubic-bezier(.85,.18,.44,1.2);
  transition-timing-function: cubic-bezier(var(--cubic1-1),var(--cubic1-2),var(--cubic1-3),var(--cubic1-4));
  position: absolute;
}
.advanced-calc .x {
  transition-timing-function: 
    cubic-bezier(
      calc(var(--cubic1-1) * var(--cubic1-change)),
      calc(var(--cubic1-2) * var(--cubic1-change)),
      calc(var(--cubic1-3) * var(--cubic1-change)),
      calc(var(--cubic1-4) * var(--cubic1-change)));
}

.y {
  transform: translateY(calc(var(--y) * 1px));
  transition-timing-function: cubic-bezier(.75,-0.35,.07,.9);
  transition-timing-function: cubic-bezier(var(--cubic2-1),var(--cubic2-2),var(--cubic2-3),var(--cubic2-4));
}

.advanced-calc .y {
  transition-timing-function: 
    cubic-bezier(
      calc(var(--cubic2-1) * var(--cubic2-change)),
      calc(var(--cubic2-2) * var(--cubic2-change)),
      calc(var(--cubic2-3) * var(--cubic2-change)),
      calc(var(--cubic2-4) * var(--cubic2-change)));
}
.z {
  transform: translateZ(calc(var(--z) * 1px));
  transition-timing-function: ease-in-out;
}

.r {
  transform: translate3d(-50%, -50%, 0) scale(var(--scale));
  transform: translate3d(-50%, -50%, 0) scale(var(--scale)) rotate(var(--rotation));
  transition: transform 1200ms ease-in-out;
}

/* give an extra amount of spin to different elements */
.advanced-calc b.r {
  --rotation: calc(var(--r) * .5);
}
.advanced-calc p.r {
  --rotation: calc(var(--r) * 1.5);
}


body {
  min-height: 100vh;
  overflow: hidden;
  background: hsl(203, 28%, 12%);
  perspective: 1000px;
  perspective-origin: center center;
}
//Determine if we can use unitless variables + calc to vary rotations and easings in relation to one another
document.documentElement.classList.add(isCalcSupported() ? 'advanced-calc' : 'basic-calc');

//All Items are stacked on top of each other with absolute positioning, make the front element the smallest scale. This function also sets up the relational cubic bezier offset. That is what sets up the additional motion effect in Chrome/Opera/Safari.
setupItems();

//Perform action on press end
if (window.PointerEvent) {
  document.body.addEventListener('pointerup', jumpFromInteraction);
} else {
  document.body.addEventListener('mouseup', jumpFromInteraction);
  document.body.addEventListener('touchend', jumpFromInteraction);
}

var style = document.documentElement.style;

function jumpFromInteraction(e) {
  if (beforeInteractionInterval) {
    clearInterval(beforeInteractionInterval);
    beforeInteractionInterval = undefined;
  }
  jump(e);
}

//Translate to the new point and rotate a randomized amount
function jump(e) {
  var x = e.clientX || e.changedTouches[0].clientX;
  var y = e.clientY || e.changedTouches[0].clientY;
  var r = Math.random() * 720 - 360;
  
  style.setProperty('--x', x);
  style.setProperty('--y', y);
  style.setProperty('--r', r + 'deg');
  
  changeEasing();
}


//Change the four points of the cubic-bezier to up the non-linear ante
function changeEasing() {
  style.setProperty('--cubic1-1', part(.8, .15));
  style.setProperty('--cubic1-2', part(.1, .2));
  style.setProperty('--cubic1-3', part(.35, .25));
  style.setProperty('--cubic1-4', part(1, .25));
  
  style.setProperty('--cubic2-1', part(.7, .15));
  style.setProperty('--cubic2-2', part(-.35, .35));
  style.setProperty('--cubic2-3', part(0, .1));
  style.setProperty('--cubic2-4', part(.8, .2));
}
function part(min, offset) {
  return Math.random() * offset + min;
}

//each square has a slightly offset scale and cubic-bezier multiplier that builds on the previous element.  When the cubic bezier is randomized on each press, each element will multiply each part of the cubic bezier by its cubic-change offset defined here.
function setupItems() {
  var items = document.querySelectorAll('.x');
  var l = items.length;
  for (var i = 0; i < l; ++i) {
    items[i].style.setProperty('--cubic1-change', .5 + i * .5/l);
    items[i].style.setProperty('--cubic2-change', 1 - i * .5/l);
    items[i].style.setProperty('--scale', 1 - i * .5/l);
  }
}





//Support functions

function isCalcSupported() {
  document.body.style.transitionTimingFunction = 'cubic-bezier(calc(1 * 1),1,1,1)';
  return getComputedStyle(document.body).transitionTimingFunction != 'ease';
}

//Do automatic animations while waiting for viewer to interact
setTimeout(freeJump,100);
var beforeInteractionInterval = setInterval(freeJump, 3200);
var freeJumpCount=0;

function freeJump() {
  jump({
    clientX: Math.floor(((freeJumpCount) % 4 < 2 ? (Math.random() * .3 + .7) : (Math.random() * .4 + .01)) * window.innerWidth),
    clientY:  Math.floor(((freeJumpCount++) % 2 == 0 ? (Math.random() * .2 + .8) : (Math.random() * .2 + .01)) * window.innerHeight)
  });
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.