body{
    padding:0;
    margin:0;
    width:100%;
    height:100vh;
    background:#424242;
  
  }
  .wrapper{
    width:250px;
    height:60px;
    position: absolute;
    left:50%;
    top:50%;
    transform: translate(-50%, -50%);
  }
  .circle{
    width:20px;
    height:20px;
    position: absolute;
    border-radius: 50%;
    background-color: #ffc107;
    left:15%;
    transform-origin: 50%;
    animation: circle .5s alternate infinite ease;
  }
  
  @keyframes circle{
    0%{
      top:60px;
      height:5px;
      border-radius: 50px 50px 25px 25px;
      transform: scaleX(1.7);
    }
    40%{
      height:20px;
      border-radius: 50%;
      transform: scaleX(1);
    }
    100%{
      top:0%;
    }
  }
  .circle:nth-child(2){
    left:45%;
    animation-delay: .2s;
  }
  .circle:nth-child(3){
    left:auto;
    right:15%;
    animation-delay: .3s;
  }
  .shadow{
    width:20px;
    height:4px;
    border-radius: 50%;
    background-color: rgba(0,0,0,.5);
    position: absolute;
    top:62px;
    transform-origin: 50%;
    z-index: -1;
    left:15%;
    filter: blur(1px);
    animation: shadow .5s alternate infinite ease;
  }
  
  @keyframes shadow{
    0%{
      transform: scaleX(1.5);
    }
    40%{
      transform: scaleX(1);
      opacity: .7;
    }
    100%{
      transform: scaleX(.2);
      opacity: .4;
    }
  }
  .shadow:nth-child(4){
    left: 45%;
    animation-delay: .2s
  }
  .shadow:nth-child(5){
    left:auto;
    right:15%;
    animation-delay: .3s;
  }
  .wrapper span{
    position: absolute;
    top:85px;
    font-family: Tahoma, sans-serif;
    font-size: 25px;
    color: #fff;
  }