https://beta.maps.apple.com/
It doesn’t seem to support Firefox, or not yet at least. Maps on the web is compatible with these web browsers
On your Mac or iPad Safari Edge Chrome On your Windows PC Edge Chrome
On your Mac or iPad
On your Windows PC
Or do the sane thing: close tab on any site that refuses to support Fx
Here you can talk about Apple's ecosystem, Apple's OSs (Operating Systems), Apple's apps, Apple's everything!!
Or do the sane thing: close tab on any site that refuses to support Fx