opt-cc/static/src/app/style/load-indicator.css

.load-indicator {
  position: absolute;
  top: 50%;
  z-index: 10000;
  left: 46%;
  filter: drop-shadow(3px 1px 2px #dadada);
}

@media only screen and (min-width: 1200px) {
  .load-indicator {
    left: 47.4%;
  }
}
@media only screen and (min-width: 1376px) {
  .load-indicator {
    left: 48%;
  }
}
@media only screen and (min-width: 1600px) {
  .load-indicator {
    left: 48.2%;
  }
}
@media only screen and (min-width: 1925px) {
  .load-indicator {
    left: 48.7%;
  }
}

.load-arrow {
  background: url(../../assets/loading.png) no-repeat;
  display: block;
  width: 70px;
  height: 70px;
}

/* Loading Animation */
.glyphicon-refresh-animate {
  animation: spin 1.5s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}