Pockit/wwwroot/css/spinner.css

/*https://www.w3schools.com/howto/howto_css_loader.asp*/

.loader {
  border: 16px solid var(--gray-4); /* Light grey */
  border-top: 16px solid var(--successborder);
  border-radius: 50%;
  width: 120px;
  height: 120px;
  animation: spin 2s linear infinite;
  margin: 1em auto;
}

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