.splash-screen {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.5);
}
.splash-screen .indicator {
  height: 100px;
  width: 100px;

  background-repeat: no-repeat;
  background-position: center;
  background-size: 100% auto;

  /* Making it center */
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;

  /* Giving it animation */
  -webkit-animation: beat 500ms linear infinite;
  animation: beat 2s linear infinite;
}

@-webkit-keyframes beat {
  0% {
    opacity: 0;
  }
  25% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
  75% {
    opacity: 0.5;
  }
  100% {
    opacity: 0;
  }
}
@keyframes beat {
  0% {
    opacity: 0;
  }
  25% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
  75% {
    opacity: 0.5;
  }
  100% {
    opacity: 0;
  }
}