#loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 999999999;
}

#loading-spinner div {
  border: 16px solid #4d4d4d;
  border-top: 16px solid #2f9b01;
  border-radius: 50%;
  width: 120px;
  height: 120px;
  animation: spin 2s linear infinite;
}

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

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