[fixes#73421764] assign 50% width for logo; previously was 75% that seems not enough for user menu dropdown and help buton in some screen sizes
[#73469232]initial effort
[fixes#73469232] this is a leaflet bug related to zoomAnimation config; default set as true, change it to false; https://github.com/Leaflet/Leaflet/issues/2693 not exactly the same issue, but I believe its related; in any case, set zoomAnimation as false solves the problem