Keeping dropdown menu active (visible) even after hover out

Question

My sub menu disappears immediately after I move my mouse pointer to scroll towards the sub menu. Feel like I have screwed my CSS somewhere. I could not figure out after seve

Answer 1

You can also give

#topnav ul li ul {
   padding-top:30px
} 

instead of:

#topnav ul li ul {
   top:30px
}