.page-loader {
  position: fixed;
  left: 46%;
  top: 47%;
  display: none;
  width: 80px;
  height: 80px;
  z-index: -1;
}
.page-loader:after {
  content: " ";
  display: block;
  width: 64px;
  height: 64px;
  margin: 8px;
  border-radius: 50%;
  border: 12px solid #aaa;
  border-color: #a29bfe transparent #a29bfe transparent;
  transform: translate(-50%, -50%);
  animation: spin 1.2s both infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

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