Makro supports custom Mega Menu. You can put any content into the menu item. Follow steps below to create a custom mega menu with your contents-

1. Navigate to Mega Menu > Add New from your WordPress dashboard.
2. Compose your mega menu there with your own contents.
3. Navigate to Appearance > Menus to set the Mega Menu you created.
4. Add a Menu Item where you want to apply the Mega Menu
5. After adding the menu item, click on the menu item to see the available Mega Menus you have in a dropdown. 
6. Then select your Mega Menu from the dropdown.

Note: We do recommend you to use Elementor Canvas page template if you want to compose the menu with Elementor.