#loadingPage {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(-135deg, #ce0b0b, #3206f5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

#loader {
  border: 10px solid #f3f3f3;
  border-top: 10px solid #3498db;
  border-radius: 50%;
  width: 80px;
  height: 80px;
  animation: spin 1s linear infinite;
}

html, body {
  display: grid;
  height: 100%;
  width: 100%;
  place-items: center;
  background-color: #f2f2f2;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.hidden {
  display: none;
}