.leaflet-control-layers-expanded { max-height: 300px; overflow-y: scroll; }
-webkit-overflow-scrolling: touch;
.leaflet-control-layers-expanded { max-height: 300px; overflow-y: scroll; }
var container = document.getElementsByClassName("leaflet-control-layers")[0];
if (!L.Browser.touch) {
L.DomEvent
.disableClickPropagation(container)
.disableScrollPropagation(container);
} else {
L.DomEvent.disableClickPropagation(container);
}