.custom-spinner {
  border: 6px solid #f3f3f3;
  border-top: 6px solid #57252D; /* maroon spinner */
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 0.8s linear infinite;
}

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