Bootstrap v4.4.1 for tempocasa mega menu https://welcm.uk/blog/mega-menu-with-bootstrap-4 https://www.vishalon.net/blog/bootstrap-4-mega-menu-example --> Gave w-100 idea on row.nthat fixes issue (col 12 was small) see index3.html * https://bbbootstrap.com/snippets/dropdown-megamenu-64049191 https://www.youtube.com/watch?v=WcguEPP456Q To make on hover instead of on click: Magazine .dropdown:hover .dropdown-menu { display: block; } nav_overlay_menu_mas_bs5 has a clean solution (not bloated by old code) --> is ok (it was imported in this directory) navbar.html