I've installed your beautiful responsive menu on my school website
www.liceoaselli.gov.it
When I open the homepage using Chrome, Safari or Explorer 11, the submenus don't open.
For example, if you open the menu item "Istituto", the submenu "Staff" does not open. The same for all the submenu items.
If you open another page, different from homepage, the same submenus open regularly.
The problem does not happen if I open the website with Firefox.
Can you help me solving my problem?
Thankyou, Silvano