.processing {
  opacity: 0.6;
  cursor: not-allowed;
}

.spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #333;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 5px;
}

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

  100% {
    transform: rotate(360deg);
  }
}

a.disabled,
button.disabled,
input[type="submit"].disabled {
  cursor: not-allowed;
}