How to show sub category when hover the nav

Is there any way to show sub categories when hover the main category on the top nav? Now I have to click it to show the sub categories. Thank you.
Using CSS you need to add this in your main stylesheet of your theme:
.dropdown:hover>.dropdown-menu {
  display: block;
Thanks, excellent if it worked
It works, if you add it to the correct file and you clear your cache. 

LiteCart uses Less Engine. You need to add the above change and rebuild Less so the css files are updated.
I added the codes to framework.min.css, it works. Thank you.