.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--muted-border-color);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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