How to highlight the selected item from basic dropdownlist in ember?

I'm using a basic dropdown in Ember and in the list, once we select item in the content list, I want to highlight the selected item. I'd like to know if I can use a simple [aria-current] & [aria-selected] in CSS to make it happen.

hbs file:

 
   <li class=" dropdown-class" >
        <p </p>
    </li>