how to make nested list go down? : 
I have a list inside another and want to have the parent list of elements aligned horizontally and the child list of elements aligned vertically below the <li>. But what happens is that the child's father <li> list is at the top with the list below and the rest <li> of the parent list are below aligned with the end of the child list.[enter image description here][1]


  [1]: http://i.stack.imgur.com/9KtRV.png