.leaflet-control-fullscreen a {
    background: url(fullscreen.png) no-repeat 0 0;
    background-color: rgba(94, 8, 11, .8);
    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;
        }
/*.leaflet-control-fullscreen a:hover {
    background: white url(fullscreen.png) no-repeat 0 0;
    background-size: 26px 52px;
    background-position: 2px 2px;
}*/

/* 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);
    }
  }