WordPress drop down menu in responsive design

Question

I am working on http://pranayam.mwancloud.com/ . My drop down menu is working great on large screens up to three levels. But there is some issue on the small screen devices you can check as well.

On the main menu: CLASSES > Yoga > contain three pages which I am trying to show. When I click on "Yoga" and the menu should drop but it is not working. I tried many things but nothing went helpful.

I will be thankful if anyone can help me.

Thanks

Answer 1

Just add one different class to ul of yoga part and give below css for it

ul.something {
 margin:0px !important;
}

See i mark that ul in picture give different class for it.

EDITED

sorry for that i don't know about wordress.

add below css in your code

li#menu-item-145 ul{
 margin:0px !important;
}