.leaflet-container .leaflet-control-mouseposition
{
    border: 2px solid #777;
    line-height: 1.1;
    padding: 2px 2px 1px;
    font: 11px/1.5 "Helvetica Neue" , Arial, Helvetica, sans-serif;
    white-space: nowrap;
    overflow: hidden;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    background: #fff;
    background: rgba(255,255,255,.5);
}