.marker-cluster:hover {
    z-index: 1000 !important;
}
.marker-cluster, .cluster-marker {
	background-clip: padding-box;
	border-radius: 20px;
	background-color: #AAA9;
	box-shadow: 0 0 3px gray;
}
.marker-cluster div {
	width: 30px;
	height: 30px;
	margin: 5px;
	text-align: center;
	border-radius: 15px;
	font: 12px "Helvetica Neue", Arial, Helvetica, sans-serif;
}
.marker-cluster span {
	line-height: 30px;
	font-weight: bold;
}