LeafletStyleSheet.css

.prunecluster {
	font-size: 12px;
	border-radius: 20px;
	transition: all 0.3s linear;
}
.leaflet-marker-icon.prunecluster-anim,
.leaflet-marker-shadow.prunecluster-anim,
.leaflet-markercluster-icon.prunecluster-anim {
	transition: all 0.3s linear;
}

.leaflet-zoom-anim .leaflet-zoom-animated.leaflet-marker-icon,
.leaflet-zoom-anim .leaflet-zoom-animated.leaflet-marker-shadow,
.leaflet-zoom-anim .leaflet-zoom-animated.leaflet-markercluster-icon {
    transition: transform 0.25s cubic-bezier(0,0,0.25,1);
}
.prunecluster div {
	width: 30px;
	height: 30px;
	text-align: center;
	margin-left: 5px;
	margin-top: 5px;
	border-radius: 50%;
}
.prunecluster div span {
	line-height: 30px;
}

.prunecluster-small {
	background-color: #b5e28c;
	background-color: rgba(181, 226, 140, 0.6);
}

.prunecluster-small div {
	width: 28px;
	height: 28px;
	background-color: #6ecc39;
	background-color: rgba(110, 204, 57, 0.6);
}

.prunecluster-small div span {
	line-height: 28px;
}

.prunecluster-medium {
	background-color: #f1d357;
	background-color: rgba(241, 211, 87, 0.6);
}

.prunecluster-medium div {
	background-color: #f0c20c;
	background-color: rgba(240, 194, 12, 0.6);
}

.prunecluster-large {
	background-color: #fd9c73;
	background-color: rgba(253, 156, 115, 0.6);
}

.prunecluster-large div {
	width: 34px;
	height: 34px;
	background-color: #f18017;
	background-color: rgba(241, 128, 23, 0.6);
}

.prunecluster-large div span {
	line-height: 34px;
}