here is how to make the map center upon resize

you should make the map center itself when resizing or when it’s responsive

after line 65 (end of the map_options function), put this:

google.maps.event.addDomListener(window, "resize", function() {
	var center = map_<?php echo $map_id ; ?>.getCenter();
	google.maps.event.trigger(map_<?php echo $map_id ; ?>, "resize");
	map_<?php echo $map_id ; ?>.setCenter(center);
});

(from quick googling -> https://hsmoore.com/keep-google-map-v3-centered-when-browser-is-resized/ )

my map is 100% width in a container div that is of varying widths, seems to work fine

great plugin btw! i dont need a giant monster plugin, just need one map with one location!

https://www.ads-software.com/plugins/simple-google-maps-short-code/