How to make a countdown of the length and width came from the center of the map, not from the top left corner ?
var map = L. map('mapElement', {
crs: L. CRS.Simple,
minZoom: 0,
maxZoom: 0,
continuousWorld: false,
});
map.setView([-128, 128], 0);
L. tileLayer('/img/map/{z}/{x}/{y}.jpg', {
attribution: 'no attribution'...