.leaflet-control-fullscreen a {
    background:#fff url(fullscreen.png) no-repeat 0 0;
    background-size:26px 52px;
}
.leaflet-touch .leaflet-control-fullscreen a {
    background-position: 2px 2px;
}
.leaflet-fullscreen-on .leaflet-control-fullscreen a {
    background-position:0 -26px;
}
.leaflet-touch.leaflet-fullscreen-on .leaflet-control-fullscreen a {
    background-position: 2px -24px;
}

/* Do not combine these two rules; IE will break. */
.leaflet-container:-webkit-full-screen {
    width:100%!important;
    height:100%!important;
}
.leaflet-container.leaflet-fullscreen-on {
    width:100%!important;
    height:100%!important;
}

.leaflet-pseudo-fullscreen {
    position:fixed!important;
    width:100%!important;
    height:100%!important;
    top:0!important;
    left:0!important;
    z-index:99999;
}

@media
(-webkit-min-device-pixel-ratio:2),
(min-resolution:192dpi) {
    .leaflet-control-fullscreen a {
        background-image:url(fullscreen@2x.png);
    }
}