added inline style for submenu separators

Author: dmitriy-rudakov

traits/admin-menu.php

@@ -14,6 +14,15 @@ trait zukit_AdminMenu {
 
 	public function admin_menu_config() {
 		add_filter('custom_menu_order', [$this, 'admin_menu_modify']);
+		$this->snippets('add_admin_style',
+			'.wp-core-ui .wp-submenu .wp-menu-separator a',
+			'border-top: 1px solid;
+		     opacity: 0.2;
+		     width: 100%;
+		     display: inline-block !important;
+			 pointer-events: none;
+		     cursor: default;'
+		);
 	}
 
 	// 	To modify menu and submenu - pass array with optional keys  ['reorder', 'rename', 'remove', 'separator']