Dear Sitepoint-users

Thanks to your help I made this site a while ago. Iím currently adapting the site, but Iím encountering some problems.
www.mira-zele.be
The site is ok to view on Tablet and smartphone, the problem is my submenu canít be accessed by neither of them. Obviously this is because they canít hover the menu-item to show the submenu-items.
Can you please help me out, how can I make the submenus accessible for smartphones and stuff?
In attachment also my css.

Thanks a lot for the help.

Kind regards
Maxx-iT
submenu Mira.jpgCSS mira.txt