.leaflet-control-custom {
  box-shadow: 0 1px 5px rgba(0,0,0,0.65);
  border-radius: 4px;
  font-size: 18px;
  line-height: 1;
  text-align: center;
}
.leaflet-control-custom:hover {
  background-color: #f4f4f4;
}