#app-loading {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f6f7;
  z-index: 9999;
}
#app-loading svg {
  width: 40px;
  height: 40px;
  animation: app-loading-spin 0.8s linear infinite;
}
@keyframes app-loading-spin {
  to { transform: rotate(360deg); }
}