#loaderBars {
  color: #FFF;
  position: relative;
  font-size: 4px;
  background: #FFF;
  animation: escaleY 1s infinite ease-in-out;
  width: 1em;
  height: 4em;
  animation-delay: -0.16s;
  margin-left: 10px;
  margin-top: 5px;
  display: none;
}

#loaderBars:before, #loaderBars:after {
  content: '';
  position: absolute;
  top: 0;
  left: 2em;
  background: #FFF;
  width: 1em;
  height: 4em;
  animation: escaleY 1s infinite ease-in-out;
}

#loaderBars:before {
  left: -2em;
  animation-delay: -0.32s;
}

@keyframes escaleY {
  0%, 80%, 100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}