// Add text to settings page for quick reference
function general_admin_notice(){
global $pagenow;
if ( $pagenow == 'nav-menus.php' ) {
echo '<div class="notice notice-info">
<p>Use the following classes are to change the appearance of sub menu items.</p>
<ul>
<li>feature--transparent = transparent</li>
<li>feature--white = white</li>
<li>feature--blue = blue</i>
<li><i>no class added = displays feature image if exists</i></li>
</ul>
</div>';
}
}
add_action('admin_notices', 'general_admin_notice');