.ol-popup {
    position: absolute;
    background-color: white;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    padding: 8px 12px;
    border-radius: 4px;
    min-width: 100px;
    text-align: center;
}
.ol-popup:after, .ol-popup:before {
    top: 100%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}
.ol-popup:after {
    border-top-color: white;
    border-width: 10px;
    left: 48px;
    margin-left: -10px;
}
.ol-map-popup {
	position: absolute;
	background: #fff;
	padding: 6px 10px;
	border-radius: 4px;
	box-shadow: 0 2px 6px rgba(0,0,0,0.2);
	font-family: sans-serif;
	font-size: 13px;
	text-align: center;
	min-width: 80px;
	pointer-events: none;
	z-index: 1000;
}