I am learning wordpress together with bootstrap and somehow I can't add class on UL tag. In the screenshot, I want to add class nav nav-tabs on UL but it was added on parent div $defaults = array( ...

I am using wp_nav_menu($args) and I want to add my_own_class CSS classname to the <li> element. I'd like to get the following result: <li class='my_own_class'><a href=''>Link</...