Viv I figured out why the pages sometimes shift a little to the rt. or the
left.
Some pages fit on the screen and do not have the scroll bar on the rt side
of the screen. Other pgs do not fit on the screen and have the scroll bar
on the rt side of the screen. When changing from a pg with the scroll bar
to one without the scroll bar the pg will necessarily shift from side to
side the size of the scroll bar.
That is a very sneaky problem.

An easy fix for this is to add enough content or line breaks to the each page to keep them from "not" having a scroll bar.

I remember Inger helping me with that one a bunch of years ago, I was totally stumped lol and I laughed so hard when she told me what was doing it

I lengthened the short pgs up to 1000 pixels in height. most of the time all pgs now will have a scroll bar except when I do an F11 and fill the screen with the browser pg and remove the browser header section then many of the main row navigation bar pgs do not have the scroll bar then but that is OK I do not do that very much The site looks good up on the 32" monitor with no browser header showing and it taking up the entire screen.