Marketing requested a menu with one being a dropdown and the Mega Menu looks just like what I needed. So I have it (followed the steps in "Customizing the Mega Menu component for your Site Designer website.") I am replacing the Nav I already had on an existing home page. However, when I drop it in, it drops into a container and ignores the empty space at the top where it should go. I've played for hours to get it there but to no avail. Any ideas?

It may be that the attempt to position it is being done on the Site Designer canvas rather than in the Inspector > Elements Tree. If so, I would be inclined to try the following.

Do a File > Save As to create the project file (.rsd) under a new name, so that you can if necessary, go back to the original one, and then act as follows.
1. In the Elements Tree select the Container-Nav called the holding-container.
2. If the contents of that container are showing, click on the little triangle (to the left of the words 'Container-Nav') to collapse it.
3. At the foot of the Elements Tree there is a series of arrow icons (up, down, left, right). With the Container-Nav still selected, click on the arrow-left until that container is no longer within any other container, and then click on the arrow-up until that container is immediately below the Body element at the top of the Elements Tree.

If the above doesn't do the trick, I would be inclined to go to the Styles panel > Position, click on the Fixed icon (the fourth one from the left), and, in the next row click the up arrow selecting 'px' and setting the figure to '0').

Frank

Thank you, Frank. The first way didn't work, but the second one did!