loading.css

.loading-animation {
  white-space: nowrap;
  text-align: center;
  margin-top: 50px;
}
.loading-animation .bounce,
.loading-animation:before,
.loading-animation:after {
  content: '';
  background-color: #72777d;
  display: inline-block;
  width: 1em;
  height: 1em;
  border-radius: 100%;
  -webkit-animation: bounce-delay 1600ms infinite ease-in-out both;
  animation: bounce-delay 1600ms infinite ease-in-out both;
  -webkit-animation-delay: -160ms;
  animation-delay: -160ms;
}
.loading-animation:before {
  margin-right: 0.25em;
  -webkit-animation-delay: -330ms;
  animation-delay: -330ms;
}
.loading-animation:after {
  margin-left: 0.25em;
  -webkit-animation-delay: 0ms;
  animation-delay: 0ms;
}
.loading-animation--small .bounce,
.loading-animation--small:before,
.loading-animation--small:after {
  width: 0.7518797em;
  height: 0.7518797em;
}
.loading-animation--inverted .bounce,
.loading-animation--inverted:before,
.loading-animation--inverted:after {
  background-color: #c8ccd1;
}
@-webkit-keyframes bounce-delay {
  0%,
  50%,
  100% {
    -webkit-transform: scale(0.625);
  }
  20% {
    opacity: 0.87;
    -webkit-transform: scale(1);
  }
}
@-moz-keyframes bounce-delay {
  0%,
  50%,
  100% {
    -moz-transform: scale(0.625);
  }
  20% {
    opacity: 0.87;
    -moz-transform: scale(1);
  }
}
@keyframes bounce-delay {
  0%,
  50%,
  100% {
    -ms-transform: scale(0.625);
    transform: scale(0.625);
  }
  20% {
    opacity: 0.87;
    -ms-transform: scale(1);
    transform: scale(1);
  }
}