Demo: CSS-only Responsive Multi-level Navigation Menu built using Menu Builder
Credits: Original HTML and CSS by W3Bits with some modifications by Beluga
Array showing menu items of the above menu
The index of the outer array is the menu item's ID. It is used to establish menu items' child-parent relationships. So, if it matches the value of a parent_id in the inner array, it means it is the parent of that menu item. Items without a pages_id are external menu items.