.loader,
.loader:before,
.loader:after {
  background: #4640ed;
  animation: loader 1s infinite ease-in-out;
  width: 16px;
}
.loader {
  animation-delay: -0.12s;
  color: #4640ed;
  font-size: 11px;
  left: 50%;
  position: absolute;
  text-indent: -9999em;
  top: 50%;
  transform: translate(-50%, -50%);
}
.loader:before,
.loader:after {
  content: '';
  position: absolute;
  top: 0;
}
.loader:before {
  animation-delay: -0.24s;
  left: -24px;
}
.loader:after {
  left: 24px;
}
@keyframes loader {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 32px;
  }
  40% {
    box-shadow: 0 -16px;
    height: 48px;
  }
}