<svg  viewBox="0 0 800 600" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
  <defs>
    <filter id="goo">
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur"></feGaussianBlur><feColorMatrix in="blur" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo"></feColorMatrix>
      <feBlend in="SourceGraphic" in2="goo"></feBlend>
    </filter>
    <linearGradient x1="0%" y1="0%" x2="100%" y2="100%" id="linearGradient-1">
      <stop stop-color="#C25068" offset="0%"></stop>
      <stop stop-color="#9E3B5C" offset="100%"></stop>
    </linearGradient>
    </defs>
            <rect id="Rectangle" fill="url(#linearGradient-1)" x="0" y="0" width="800" height="600"></rect>
            <g class="gooey" transform="translate(330.000000, 230.000000)" fill="#FFFFFF">
              <circle class="dropTop" r="10" cx="70" cy="12"></circle>
              
              <circle class="drop" r="40" cx="70" cy="70"></circle>
              <circle class="drops drop0" r="40" cx="70" cy="70"></circle>
              <circle class="drops drop1" r="40" cx="70" cy="70"></circle>
              <circle class="drops drop2" r="40" cx="70" cy="70"></circle>
              <circle class="drops drop3" r="40" cx="70" cy="70"></circle>
              <circle class="drops drop4" r="40" cx="70" cy="70"></circle>
              
              
             <path class="ring0" d="M70,140 C31.3400675,140 0,108.659932 0,70 C0,31.3400675 31.3400675,0 70,0 C108.659932,0 140,31.3400675 140,70 C140,108.659932 108.659932,140 70,140 Z M70,129.552239 C102.889793,129.552239 129.552239,102.889793 129.552239,70 C129.552239,37.1102067 102.889793,10.4477612 70,10.4477612 C37.1102067,10.4477612 10.4477612,37.1102067 10.4477612,70 C10.4477612,102.889793 37.1102067,129.552239 70,129.552239 Z" id="Combined-Shape"></path> 
              <path class="ring" d="M70,140 C31.3400675,140 0,108.659932 0,70 C0,31.3400675 31.3400675,0 70,0 C108.659932,0 140,31.3400675 140,70 C140,108.659932 108.659932,140 70,140 Z M70,129.552239 C102.889793,129.552239 129.552239,102.889793 129.552239,70 C129.552239,37.1102067 102.889793,10.4477612 70,10.4477612 C37.1102067,10.4477612 10.4477612,37.1102067 10.4477612,70 C10.4477612,102.889793 37.1102067,129.552239 70,129.552239 Z" id="Combined-Shape"></path>
              <circle class="toggler" fill=
"rgba(255,255,255,0)" r="120" cx="70" cy="70"></circle>
            </g>
  
</svg>
<form>
    <input tabindex="-1" id="boom" name="boom" type="checkbox">
    <div></div>
</form>
<p class="bottom">Based on <a href="https://dribbble.com/shots/1933701-Liquid-Radio-Button" target="_blank">this dribbble shot</a>.</p>
html{height:100%;}
body{
  background:linear-gradient(to bottom right, #fff, #f0f0f0);
  text-align:center;
  min-height:600px;
  position:relative;
  height:100%;
  width:100%;
}
.bottom{
  position:absolute;
  font-size:12px;
  bottom:0;
  right:0;
  left:0;
  color:rgba(#000, .4);
  a{color:rgba(#000, .4);
    transition:.27s;
    &:hover{
      color:#C25068;
    }
  }
  
}
svg{
  max-width:600px;
  margin-top:40px;
  box-shadow:0px 5px 22px rgba(black, .27)
}
svg .gooey{
  filter:url('#goo');
}
svg .drop, svg .dropTop, svg .drops{
  opacity:0;
}
svg .toggler{cursor:pointer;}
#boom{
  position:absolute;
  top:-1000px;
  left:-1000px;
  opacity:0;
  
  & + div:before{content:"unchecked";
    color:rgba(#000, .4);}
  &:checked + div:before{content:'checked'}
}

View Compiled
var check = new TimelineMax({paused:true});
var uncheck = new TimelineMax({paused:true});

check
  .set('.ring', {opacity:1})
  .set('.drops', {opacity:0})
  .set('.ring0', {opacity:0})
  .set('.drop', {opacity:0, y:-32, scale:.4, x:0, transformOrigin:"50%, 0%"})
  .set('.ring', {transformOrigin:"50%, 50%"})
  .set('.dropTop', {opacity:1,scale:.2, transformOrigin:"50%, 0%"})
  .add('sync')
  .to('.ring', .17, { scaleY:.95}, 'sync')
   .to('.dropTop', .1, { scale:1, y:.5, ease:Power0.easeNone}, 'sync')
  .to('.dropTop', .1, { scale:.3, ease:Power0.easeNone}, 'sync +=.08')
  .to('.dropTop', .08, {transformOrigin:"50%, 40%", scale:0, ease:Power0.easeNone}, 'sync +=.181')
  .set('.drop',  { opacity:1, ease:Power0.easeNone}, 'sync')
  .to('.drop', .17, { y:0, ease:Power1.easeIn}, 'sync')
  .to('.drop', .08, {scale:.9, ease:Power0.easeNone}, 'sync +=.02')
  .to('.ring', 2, {transformOrigin:"50%, 50%", scaleY:1, ease:Elastic.easeOut.config(.8, .1)}, 'sync +=.14')
  .to('.drop', 1.8, {transformOrigin:"50%, 10%", scale:1, ease:Elastic.easeOut.config(.8, .14)}, 'sync +=.14')


uncheck
  .set('.ring0', {opacity:1})
  .set('.drop', {opacity:0}) 
  .set('.ring', {opacity:0})
  .set('.drops', {opacity:1}) 
  .set('.drop0', {rotation:'40deg',transformOrigin:"50%, 50%"})
  .set('.drop1', {rotation:'112deg',transformOrigin:"50%, 50%"})
  .set('.drop2', {rotation:'175deg',transformOrigin:"50%, 50%"})
  .set('.drop3', {rotation:'-110deg',transformOrigin:"50%, 50%"})
  .set('.drop4', {rotation:'-35deg',transformOrigin:"50%, 50%"}) 
  .add('uncheck')
  .to('.drops', .2, {transformOrigin:"50%, 50%", scaleX:.5, scaleY:.3,})
  .staggerTo('.drops', .2, { cycle:{
    x:[45, 59, 14, -62, -35],
    y:[-46, 29, 62, 15, -55],    
  }}, '0.0184', 'uncheck+=.1')
  .to('.ring0', .2, {transformOrigin:"50%, 50%", scale:1.05}, 'uncheck+=.1')
  .add('last')
  .to('.ring0', 2, {transformOrigin:"50%, 50%", scale:1, ease:Elastic.easeOut.config(.8, .1)}, 'last')
  .to('.drops', .2, {scaleY:.1, scaleX:.3},'last+=0');


check.timeScale(1.27);
uncheck.timeScale(1.14);

$('.toggler').click(function(){
  if (!$('#boom').is(':checked')){
    check.play(0);
    $('#boom').prop('checked', true);
    
  } else{
    uncheck.play(0);
    $('#boom').prop('checked', false);
  }
});
Run Pen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js
  2. https://cdnjs.cloudflare.com/ajax/libs/gsap/1.19.1/TweenMax.min.js