:root {
  --spinner: inherit;
  --spinner-background: inherit;
  --spinner-size: 50px;
}

/* https://www.w3schools.com/howto/howto_css_loader.asp */
.load-spinner {
  border: 16px solid var(--spinner-background);
  border-radius: 50%;
  border-top: 16px solid var(--spinner);
  width: var(--spinner-size);
  height: var(--spinner-size);
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear 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); }
}