For example, my site http://www.ethanhirschbein.com is a one-pager site, thanks to Weebly's modified portfolio themes. But visit the same site on your mobile device, and the menu is now visible even though it was taken away on PC. I suggest you hide the menu on mobile too.
I know you could easily fix this ourself by editing the HTML but I think new users too would appreciate it being more simplified. Thanks!