Hello,
Add below code to Theme Options > Custom CSS
@media only screen and (min-width: 992px) { .site-header .item-design-mega-menu .nav-sublist-dropdown { left: 0 !important; margin: 0 !important; right: 0 !important; width: 100% !important; max-width: 100% !important; transform: none !important; } .item-design-mega-menu, .header-top, .header-main, .header-bottom, .header-wrapper .header-bottom .et_column { position: static; } }
If it does not help then provide us with a link to your site and temporary WP Dashboard access.
Regards
