dysfunctional responziv

Hello,
I have a problem on my page www.hudbaprotebe.cz
On the mobile phone and tablet do not go to the subsites clicked menu items
For example on site: www.hudbaprotebe.cz/abba.html I can not be clicked on submenus items in "dle interpretů" It does not work...

Thank you for your help
Pavel Tom

Dear Pavel Tom.
Thank you for using our product.
I checked your site on iphone, But I saw submenu works fine. Please view image attachment and check it again.

Thank you for answer,
but But it does not work for example - www.hudbaprotebe.cz/hity-2015.html and all other sites outside the main page...

Dear Pavel tom.
Thanks your feedback.
I saw your problem. Please give me your account of administrator via private message.
I will check it for you

Hi Tomas Pavel.
I checked your site and I saw the problem:
Submenu doesn't scroll on mobile because You had custom css for sticky in template
I test it by remove all your code in file ..templates/hudba/css/custom.css. It works fine. Please view this video: