The Storefront Mega Menus plugin allows you to create full-width dropdown menus out of top-level menu items in the Storefront theme. Menu's are created through the WordPress widget interface. You can arrange the content of your menu by dragging and dropping widgets. This plugin allows you to configure up to 6 widgets per row. In addition, the size of the widgets are customizable. The plugin aligns all columns to the storefront grids.