Okay Janet, I've looked at your web file and the first thing I noticed was that on the mobile version the menu wasn't leading to a drop-down of sub-menus. No reason why this was the case???? Deleted that menu & added another and it seemed to work fine. There was also some very odd behavior with the file but subsequent saves seemed to slowly remove these.

Anyway I've emailed you an amended version but in the meantime I published the amended site to my server (link below) which seems to work fine. Let me know when you're happy & I'll delete it from my server.

LINK