Simple Responsive Menu
Simple Responsive Menu is a drop-in replacement for the standard Joomla vertical menu. At wider screen widths, you should see no difference at all from the standard Joomla menu. At narrower screen widths the normal vertical menu is made invisible, and a select list menu is made visible instead. You can configure the screen width where this switch takes place, and the position of the select list menu.
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. Vertical menus do not work well on mobile phones!
Simple Responsive Menu is a quick and easy way to make your vertical menu responsive.