@keyframes rotate {
  from {
    transform: rotate(360deg);
  }
  to {
    transform: rotate(0deg);
  }
}

.spinner {
  animation: rotate 1s linear infinite;
  height: 42px;
  left: calc(50% - 24px);
  position: absolute;
  top: calc(50% - 24px);
  width: 42px;
  z-index: 20;
}