#root {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100%;
  height: 100%;
}
#rootSpinner {
  animation: spin 2s infinite linear;
}
@keyframes spin {
  from { transform: scale(1) rotate(0deg); }
  to { transform: scale(1) rotate(360deg); }
}