Mega Menu

In order to create multi-column Mega Menu:

1- Create a stack, and add a `Nestable Manual Nav` block with `Mega Menu` template.

2- On your sitemap, add `Mega Menu Content` attribute to the parent page. Then insert the stack name. (The parent page should be on level 1 only)

3- Add `Mega Menu Column` attribute to specify the number of columns.

4- Add `Mega Menu Background Image` attribute to specify an image which will display on right-bottom of the mega menu container.