n

HTML

CSS

* {
  box-sizing: border-box;
}

div {
  display: block;
  height: 100%;
  -webkit-animation: hue-rotate 10s linear infinite;
          animation: hue-rotate 10s linear infinite;
}

.button {
  -webkit-font-smoothing: antialiased;
  background-color: #222;
  border: none;
  color: #fff;
  display: inline-block;
  font-family: "Montserrat", sans-serif;
  font-size: 14px;
  font-weight: 100;
  text-decoration: none;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  letter-spacing: 1px;
  color: white;
  padding: 20px 40px;
  text-transform: uppercase;
  transition: all 0.1s ease-out;
}
.button:hover {
  background-color: #90feb5;
  color: #fff;
}
.button:active {
  transform: scale(0.95);
}
.button--bubble {
  position: relative;
  z-index: 2;
  color: white;
  background: none;
}
.button--bubble:hover {
  background: none;
}
.button--bubble:hover + .button--bubble__effect-container .circle {
  background: #44fd82;
}
.button--bubble:hover + .button--bubble__effect-container .button {
  background: #44fd82;
}
.button--bubble:active + .button--bubble__effect-container {
  transform: scale(0.95);
}
.button--bubble__container {
  position: relative;
  display: inline-block;
}
.button--bubble__container .effect-button {
  position: absolute;
  width: 50%;
  height: 25%;
  top: 50%;
  left: 25%;
  z-index: 1;
  transform: translateY(-50%);
  background: #222;
  transition: background 0.1s ease-out;
}

.button--bubble__effect-container {
  position: absolute;
  display: block;
  width: 200%;
  height: 400%;
  top: -150%;
  left: -50%;
  filter: url("#goo");
  transition: all 0.1s ease-out;
  pointer-events: none;
}
.button--bubble__effect-container .circle {
  position: absolute;
  width: 25px;
  height: 25px;
  border-radius: 15px;
  background: #222;
  transition: background 0.1s ease-out;
}
.button--bubble__effect-container .circle.top-left {
  top: 40%;
  left: 27%;
}
.button--bubble__effect-container .circle.bottom-right {
  bottom: 40%;
  right: 27%;
}

.goo {
  position: absolute;
  visibility: hidden;
  width: 1px;
  height: 1px;
}

html, body {
  width: 100%;
  height: 100%;
  text-align: center;
}

.button--bubble__container {
  top: 50%;
  margin-top: -25px;
}

@-webkit-keyframes hue-rotate {
  from {
    -moz-filter: hue-rotate(0);
    -ms-filter: hue-rotate(0);
    filter: hue-rotate(0);
  }
  to {
    -moz-filter: hue-rotate(360deg);
    -ms-filter: hue-rotate(360deg);
    filter: hue-rotate(360deg);
  }
}

@keyframes hue-rotate {
  from {
    -moz-filter: hue-rotate(0);
    -ms-filter: hue-rotate(0);
    filter: hue-rotate(0);
  }
  to {
    -moz-filter: hue-rotate(360deg);
    -ms-filter: hue-rotate(360deg);
    filter: hue-rotate(360deg);
  }
}

JS

$('.button--bubble').each(function() {
  var $circlesTopLeft = $(this).parent().find('.circle.top-left');
  var $circlesBottomRight = $(this).parent().find('.circle.bottom-right');

var tl = new TimelineLite();
  var tl2 = new TimelineLite();

var btTl = new TimelineLite({ paused: true });

tl.to($circlesTopLeft, 1.2, { x: -25, y: -25, scaleY: 2, ease: SlowMo.ease.config(0.1, 0.7, false) });
  tl.to($circlesTopLeft.eq(0), 0.1, { scale: 0.2, x: '+=6', y: '-=2' });
  tl.to($circlesTopLeft.eq(1), 0.1, { scaleX: 1, scaleY: 0.8, x: '-=10', y: '-=7' }, '-=0.1');
  tl.to($circlesTopLeft.eq(2), 0.1, { scale: 0.2, x: '-=15', y: '+=6' }, '-=0.1');
  tl.to($circlesTopLeft.eq(0), 1, { scale: 0, x: '-=5', y: '-=15', opacity: 0 });
  tl.to($circlesTopLeft.eq(1), 1, { scaleX: 0.4, scaleY: 0.4, x: '-=10', y: '-=10', opacity: 0 }, '-=1');
  tl.to($circlesTopLeft.eq(2), 1, { scale: 0, x: '-=15', y: '+=5', opacity: 0 }, '-=1');

var tlBt1 = new TimelineLite();
  var tlBt2 = new TimelineLite();
  
  tlBt1.set($circlesTopLeft, { x: 0, y: 0, rotation: -45 });
  tlBt1.add(tl);

tl2.set($circlesBottomRight, { x: 0, y: 0 });
  tl2.to($circlesBottomRight, 1.1, { x: 30, y: 30, ease: SlowMo.ease.config(0.1, 0.7, false) });
  tl2.to($circlesBottomRight.eq(0), 0.1, { scale: 0.2, x: '-=6', y: '+=3' });
  tl2.to($circlesBottomRight.eq(1), 0.1, { scale: 0.8, x: '+=7', y: '+=3' }, '-=0.1');
  tl2.to($circlesBottomRight.eq(2), 0.1, { scale: 0.2, x: '+=15', y: '-=6' }, '-=0.2');
  tl2.to($circlesBottomRight.eq(0), 1, { scale: 0, x: '+=5', y: '+=15', opacity: 0 });
  tl2.to($circlesBottomRight.eq(1), 1, { scale: 0.4, x: '+=7', y: '+=7', opacity: 0 }, '-=1');
  tl2.to($circlesBottomRight.eq(2), 1, { scale: 0, x: '+=15', y: '-=5', opacity: 0 }, '-=1');
  
  tlBt2.set($circlesBottomRight, { x: 0, y: 0, rotation: 45 });
  tlBt2.add(tl2);

btTl.add(tlBt1);
  btTl.to($(this).parent().find('.button.effect-button'), 0.8, { scaleY: 1.1 }, 0.1);
  btTl.add(tlBt2, 0.2);
  btTl.to($(this).parent().find('.button.effect-button'), 1.8, { scale: 1, ease: Elastic.easeOut.config(1.2, 0.4) }, 1.2);

btTl.timeScale(2.6);

$(this).on('mouseover', function() {
    btTl.restart();
  });
});

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