@keyframes spin { to { transform: rotate(1turn); } }

.image-page-spinner {
  border: 3px solid #ffffff26;
  border-top-color: #fff9;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  animation: spin .8s linear infinite;
}
.image-page-spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}