.fullscreen-icon {
    background-image: url(../leaflet/icon-fullscreen.png);
    background-size: 16px 16px;
}
/*.leaflet-retina .fullscreen-icon {
    background-image: url(../leaflet/icon-fullscreen-2x.png);
    background-size: 26px 26px;
}*/
/* one selector per rule as explained here : http://www.sitepoint.com/html5-full-screen-api/ */
.leaflet-container:-webkit-full-screen { width: 100% !important; height: 100% !important; z-index: 500; }
.leaflet-container:-ms-fullscreen {
    width: 100% !important;
    height: 100% !important;
    z-index: 500;
}
.leaflet-container:full-screen {
    width: 100% !important;
    height: 100% !important;
    z-index: 500;
}
.leaflet-container:fullscreen {
    width: 100% !important;
    height: 100% !important;
    z-index: 500;
}
.leaflet-pseudo-fullscreen {
    position: fixed !important;
    width: 100% !important;
    height: 100% !important;
    top: 0px !important;
    left: 0px !important;
    z-index: 500;
}