Move nav menu above header

It’s possible to hack with the CSS to make it display this way, but I would suggest creating a child theme and experimenting with the hooks/styles if you want this to be bullet-proof across all browsers and devices.

As a quick test I did this:

@media only screen and (min-width: 61.063em) {
	.main-navigation-container {
		position: absolute;
		top: 0;
	}
	.site-header-wrapper {
		margin-top: 67px;
	}
}