hi
you must go inside your WP editor in
Appeareance -> Menus -> the one the up right you click on the + and create a nex menu (name it grey top menu for instance)
then add to it as many categories or pages as you want (on the left bottom of the same page)
then in order for this menu to appear you must click on the top left of this page under ‘theme locations’ and choose from the scroll down of the ‘top fill width menu’ what you just created: ‘grey top menu’.
SAVE, refresh your website page.
:)
Deprecated: Function get_currentuserinfo is deprecated since version 4.5.0! Use wp_get_current_user() instead. in /var/www/html/wp-includes/functions.php on line 5383