.leaflet-control-fullscreen :before{
font-family: FontAwesome;
content: "\f0b2";
background-color: rgb(0, 0, 0, 0.7);
font-size:150%;
}
 
  
.leaflet-control-fullscreen a:hover {
background-color: gold; 
  }  
  
.leaflet-fullscreen-on .leaflet-control-fullscreen a {
    /* background-position:0 -26px;*/
  }

.leaflet-container:-webkit-full-screen {
  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;
  }