.leaflet-container .leaflet-control-zoomlabel {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 5px #bbb;
    width: 27px;
    margin-top: 0px;
    padding: 5px;
    text-align: center;
    border-radius: 3px;
    color: #333;
    font: 14px/1.5 "Helvetica Neue", Arial, Helvetica, sans-serif;
}