Description: Drop down menus (select boxes or role=”listbox”) should always have a description that is explicitly associated with the field to make sure that users of assistive technologies will also know what the field is for.
<div class="carousel-inner" role="listbox"> <!--Content--> </div>
How to fix it: If the drop down menu (select box or role=”listbox”) has a visible description indicating the purpose of the menu, this description should be explicitly associated to the input drop down menu either as a HTML label or using the WAI-ARIA attribute ‘aria-labelledby’. If it is not possible to add a visible description, either add a mouseover text (‘title’ attribute) to the drop down menu or create an invisible label using the WAI-ARIA attribute ‘aria-label’.
<div aria-label="image carousel" class="carousel-inner" role="listbox"> <!--Content--> </div>