Genesis - Add Top Menu

functions.php

<?php

add_filter( 'genesis_default_menus', 'prefix_register_top_menu' );

function prefix_register_top_menu( array $menus ) {
    $menus['top'] =  __( 'Top Navigation Menu', 'prefix-domain' );
    return $menus;
 }
 
add_action('genesis_before_header', 'prefix_do_top_nav');
function prefix_do_top_nav() {
	$menu_args = array(
		'theme_location'  => 'top',
		'sort_column'     => 'menu_order',
		'container_class' => 'wrap',
		'menu_class'      => 'menu genesis-nav-menu menu-top',
	);
	?>
	<nav class="nav-top" role="navigation" itemscope itemtype="http://schema.org/SiteNavigationElement">
		<?php wp_nav_menu( $menu_args ); ?>
	</nav>
	<?php
}

style.css

/* Top Navigation
--------------------------------------------- */
 
.nav-top {
        background: #222;
        border-bottom: 1px solid #444;
}
 
.menu-top a {
        background: #222;
        padding: 14px 20px;
        padding: 1.4rem 2rem;
}
 
.menu-top a:hover {
        background: #111;
        color: #fff;
}
 
.menu-top .current-menu-item > a {
        background: #d24d33;
        color: #fff;
}
 
.menu-top .sub-menu a {
        background: #222;
        color: #ccc;
}
 
.menu-top .sub-menu a:hover {
        background: #111;
        color: #fff;
}