If you want to open dropdown menu on hover using only CSS, then read further to perform this task.. Show Bootstrap Dropdown Menu on Hover Using CSS Only Bootstrap CSS class dropdown-menu-right with source code and live preview. Take a look at this awesome Bootstrap Dropdown Menu Hover. Bootstrap 3 only supports links for menu items. In the subsequent levels, We position the.dropdown-menu using CSS to achieve the desired location. This article shows the methods by which a