Simple Responsive Menu
With CSS3 now widely supported it is relatively easy to build a site that adapts the site layout for smaller or larger screens. If the site uses a vertical menu, the menu must change its layout completely for small screens. Vertical menus do not work well on mobile phones.
The old days of desktop or laptop computers being the prevalent way to access the web have gone, and most sites now need to work equally well on both small and large screens. Simple Responsive Menu is a quick and easy way to make your old vertical menu responsive.