Twenty Fifteen Top Menu

It is possible but you have to modify code.

Create a child theme and add the following to the child theme’s functions.php file:

twentyfifteen-child/functions.php

add_action( 'after_setup_theme', 'register_my_menu' );
function register_my_menu() {
  register_nav_menu( 'top-header-menu', 'Top Header Menu' );
}

Copy the header.php file from twentyfifteen/ to twentyfifteen-child/

Edit the copied file and add the following to its end

<?php wp_nav_menu( array( 'theme_location' => 'top-header-menu' ) ); ?>

Activate this child theme from WP-Admin > Appearance > Themes.

Go to WP-Admin > Appearance > Menus > Manage Locations tab and assign a menu to the Top Header Menu location.

At this point the menu will look messed up, post your URL and I’ll provide the necessary code to align it.

I have tried this and it adds my nav to the top but as a list not a nav menu so the submenu is just added to the list

Wow. I would love to continue this.

Is the next step creating CSS in the twentyfifteen-child/style.css file? Would this be based on the * 6.2 Menus section? Would the css selector be “.top-header-menu { … }”?

.top-header-menu a {
	display: block;
	padding: 0.8em 0;
	position: relative;
	text-decoration: none;
}

I think what is wanted is a horizontal menu/nav bar.

Thanks