/**
* Place An Advertisement Under Your Header
* Use conditionals to show/hide accordingly
*
* @link https://codex.wordpress.org/Conditional_Tags
*
*/
function add_banner_after_header() { ?>
<div class="my-header-ad clr">
<div class="container clr"> <!-- .center the content -->
YOUR ADVERTISEMENT CODE HERE
</div><!-- .container -->
</div><!-- .my-header-ad -->
<?php }
add_action( 'wpex_hook_header_after', 'add_banner_after_header' );
Snippets: Place An Advertisement Under Your Header/Menu
All PHP snippets should be added via a child theme's functions.php file or via the Code Snippets Plugin (or alternative plugin)