.leaflet-control-fullscreen a {
  background: #fff !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.leaflet-control-fullscreen a:before {
  content: "⛶";
  font-size: 18px;
}


/* 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;
  }