encephalon mobile menu doesnt work on iPhone

mobile menu doesnt open on iPhone. it works on iPad and developer tools from firefox.
http://www.internist-rheuma.at/

any ideas?

thx!

Hi!
Thank you for letting us know about this. We will fix this in the theme.
For a quick fix replace the code:

#scrollUp { bottom: auto; height:47px; right:0; width:100%;}

with:

#scrollUp { top: auto; height:47px; right:0; width:100%;}

inside the css/mobile.css file in the directory of the theme.