Although a Box and a Grid can be added to the mega menu, the menu items themselves can not be added to the container.
Mega menu does not support responsive design. Per nicepage, elements should be added to a Box or a Grid to follow responsive design.
Mega menu properties do not support the standard container (box model) properties of elements used on a page.

As a result, it is very difficult to design a responsive website.

Steps to reproduce:
Create a mega menu.
Set the width of the menu to Page. (Page or Screen mode, etc)
Using 2-3 elements (image, text, and menu item container), align these items to the middle of the mega menu.
For example:
A. IMAGE | MENUITEMS, where | is the middle of the screen.
B. IMAGE | TEXT | MENUITEMS, where TEXT is in the middle of the screen.

  1. Adjust for each Screen size and see how nearly impossible it is.
  2. View in Browser and see how it doesn't appear like it does in nicepage views, because resolutions can vary outside of the specific sizes that are used in nicepage.

No screenshots provided.