.fullscreen-icon {
background-image: url(//www.lancashireway.com/wp-content/plugins/os-datahub-maps/css/icon-fullscreen.svg);
background-size: 26px 52px;
}
.fullscreen-icon.leaflet-fullscreen-on {
background-position: 0 -26px;
}
.leaflet-touch .fullscreen-icon {
background-position: 2px 2px;
}
.leaflet-touch .fullscreen-icon.leaflet-fullscreen-on {
background-position: 2px -24px;
}  .leaflet-container:-webkit-full-screen {
width: 100% !important;
height: 100% !important;
z-index: 99999!important;
}
.leaflet-container:fullscreen {
width: 100% !important;
height: 100% !important;
z-index: 99999!important;
}
.leaflet-pseudo-fullscreen {
position: fixed !important;
width: 100% !important;
height: 100% !important;
top: 0 !important;
left: 0 !important;
z-index: 99999!important;
}