This is a classic example of the navigation bar, with scrollbar effect to the dropdown navigated links. This could be used for the educational or business website. This uses bootstrap and jquery. HTML is quite simple with the tag defining the dropdown and sub menu. It shows the example of a scroll bar effect where the submenus are scrolling without the scroll bar displayed vertically. Also, there is an example where no sub-menus are mentioned under the menu. The scrolling effect is given by javascript, using hover functionality. Javascript takes care of the height and items in sub-menus. It decides the speed of scrolling according to the list in the sub menu. More the list faster is the scrolling. CSS defined the style for each class used in the snippet. Use this snippet to create the desired navbar for your website.