.leaflet-cluster-anim .leaflet-marker-icon,
.leaflet-cluster-anim .leaflet-marker-shadow {
  -webkit-transition:
    -webkit-transform 0.3s ease-out,
    opacity 0.3s ease-in;
  -moz-transition:
    -moz-transform 0.3s ease-out,
    opacity 0.3s ease-in;
  -o-transition:
    -o-transform 0.3s ease-out,
    opacity 0.3s ease-in;
  transition:
    transform 0.3s ease-out,
    opacity 0.3s ease-in;
}