#loading {
  text-align: center;
  margin: 20px;
  font-weight: bold;
  color: #555;
}

.spinner {
  border: 6px solid #f3f3f3;
  border-top: 6px solid #4285F4;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: auto;
}

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

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