<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> //function.php function register_my_menus(){ register_nav_menus( array( 'new-menu'=>_('leftsidebarmenu'), 'another-menu'=>_('rightsidebar'), 'an-extra-menu'=>_('An Extra Menu') ) ); } add_action('init','register_my_menus'); //header.php <?php wp_nav_menu( array( 'theme_location' => 'new-menu' ) ); ?> <style> .sub-menu { display:none; } .leftsidebar .menu-item-has-children a::after { content: "\20ac"; } </style> <script> jQuery(document).ready(function(e) { jQuery(".leftsidebar li").click(function(e) { e.preventDefault(); jQuery(".sub-menu").css('display','none'); jQuery(this).find(".sub-menu").toggle(); }); }); </script>