.spinner {
  display: inline-block;
  width: 50px;
  height: 50px;
  border: 5px solid rgba(0, 0, 0, 0.1);
  border-top: 5px solid #007bff;
  border-radius: 50%;
  animation: spin 2s linear infinite;
}
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}