body {
  background: #fff;
}

.preloading {
  text-align: center;
  padding: 20%;
}

.preloading h2.pre-h2 {
  color: #ccc;
  margin: 0;
  text-align: center;
  font: .8em verdana;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.preloading span {
  display: inline-block;
  vertical-align: middle;
  width: .6em;
  height: .6em;
  margin: .19em;
  background: rgba(64, 158, 255, .1);
  border-radius: .6em;
  animation: loading 1s infinite alternate;
}

.preloading span:nth-of-type(2) {
  background: rgba(64, 158, 255, .2);
  animation-delay: 0.2s;
}

.preloading span:nth-of-type(3) {
  background: rgba(64, 158, 255, .4);
  animation-delay: 0.4s;
}

.preloading span:nth-of-type(4) {
  background: rgba(64, 158, 255, .6);
  animation-delay: 0.6s;
}

.preloading span:nth-of-type(5) {
  background: rgba(64, 158, 255, .8);
  animation-delay: 0.8s;
}

.preloading span:nth-of-type(6) {
  background: rgba(64, 158, 255, 1);
  animation-delay: 1.0s;
}

@keyframes loading {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}