.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;
  }