Why doesn't the zoom property work on google map?

Question

css

added a google map to the site, but the zoom property does not work
, what could be the problem?
v2.verstkalp.esy.es

Answer 1

Try changing the v2.verstkalp.esy.es/scripts/googleMaps.js file scrollwheel :false to true
scrollwheel: boolean If false, disables scrollwheel zooming on the map. The scrollwheel is enabled by default.
Only it seems to me that there will be a problem at the end of the landing page, when the end of the page is reached, the map will be zoomed when scrolling. I would just leave the - / + buttons for zoom.