/* 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;
}