@stinpriza: Hello there,
Go to => Appearance => Customize => Additional CSS and add the following CSS Code.
@media screen and (min-width: 64em) {
	#header-content {
	    top: 0;
	    bottom: unset;
	}
	.home:not(.header-media-disabled).navigation-classic .site-navigation .primary-menu li > ul, .home:not(.no-featured-slider).navigation-classic .site-navigation .primary-menu li > ul {
		top: 100%;
	}
	.navigation-classic .site-navigation .primary-menu ul .menu-item-has-children > a > .icon, .home.navigation-classic #header-wrapper:not(.header-top) .site-navigation .primary-menu ul .menu-item-has-children > a > .icon {
	    -webkit-transform: rotate(-90deg);
	    -ms-transform: rotate(-90deg);
	    transform: rotate(-90deg);
	}
	.home:not(.header-media-disabled).navigation-classic #header-wrapper:not(.header-top) .site-navigation .menu-item-has-children > a > .icon, .home:not(.header-media-disabled).navigation-classic #header-wrapper:not(.header-top) .site-navigation .page_item_has_children > a > .icon, .home:not(.no-featured-slider).navigation-classic #header-wrapper:not(.header-top) .site-navigation .menu-item-has-children > a > .icon, .home:not(.no-featured-slider).navigation-classic #header-wrapper:not(.header-top) .site-navigation .page_item_has_children > a > .icon {
	    transform: unset;
	}
	.home.navigation-classic #header-wrapper:not(.header-top) .site-navigation ul ul ul {
	    top: 0;
	    border: unset;
	}
	.navigation-classic .site-navigation .primary-menu ul li:hover > ul, .navigation-classic .site-navigation .primary-menu ul li.focus > ul {
	    left: 100%;
	}
	.navigation-classic .site-navigation .primary-menu li:hover > ul, .navigation-classic .site-navigation .primary-menu li.focus > ul {
	    right: auto;
	    left: 0;
	    animation: smoothScrollBack 0.3s backwards, fadein 0.6s;
	}
	.navigation-classic .site-navigation .primary-menu ul li:hover > ul, .navigation-classic .site-navigation .primary-menu ul li.focus > ul {
	    left: 100% !important;
	}
	.navigation-classic .site-navigation .primary-menu li:hover > ul, .navigation-classic .site-navigation .primary-menu li.focus > ul {
	    right: auto !important;
	    left: 0 !important;
	    animation: smoothScrollBack 0.3s backwards, fadein 0.6s;
	}
}
Let me know if this works out!
Kind Regards,
Skandha