/* open-source loading spinner from https://loading.io/css/ */

.lds-dual-ring {
  display: none;
  width: 64px;
  height: 64px;
}

.lds-dual-ring.visible{
 display: inline-block; 
}

.lds-dual-ring:after {
  content: " ";
  display: block;
  width: 46px;
  height: 46px;
  margin: 1px;
  border-radius: 50%;
  border: 5px solid red;
  border-color: red transparent red transparent;
  animation: lds-dual-ring 1.2s linear infinite;
}
@keyframes lds-dual-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}