Hi,
Try to use the next custom CSS code:
.menu-static-block.nav-sublist-dropdown {
left: 50% !important;
transform: translateX(-50%) !important;
margin: 0 !important;
animation: et-fadeIn .3s ease !important;
display: block;
opacity: 0;
visibility: hidden;
transition: all .2s ease-in-out;
}
.item-design-mega-menu {
position: static;
}
.item-design-mega-menu:hover .menu-static-block.nav-sublist-dropdown {
opacity: 1;
visibility: visible;
}
Regards,
Hung PD