I upgraded my DNN from 6.1.5 to 7.0.6.  At first glance, everything appears exactly as it was before the upgrade, when you view the site as a visitor.  But one thing I did notice is that the login module layout is all messed up--the inputs are slammed to the left side and the labels are way to the right of the inputs, and the login/retrieve buttons are just thrown on the page seemingly in random positions (not centered, not left or right aligned).  Also, the Retrieve Password is displayed now and somehow in the past (with 6.1.5) that button was not displayed...I cannot find a setting in DNN 7 anywhere that lets you choose to not show that button (I only see Enable Remember Me).

But here is the main issue.  After you login (the login functionality is OK), part of the page layout is horrible in Edit mode.  Here is a summary of what I see wrong in Edit mode:
-menu items are shifted all the way to the right side, instead of left, and for some reason it pushes my last menu item to the next line, which throws off the remaining items in my header.
-the module containers are shifted way down and there's about a 200px blank area above my first module on the page--just white space.

If I switch to View mode, everything displays perfectly--I do not see anything at all wrong.  If I switch to layout mode, the containers are displayed against the top of the page (underneath my header section) as they should--there is no extra white space above the top containers.

I see the same behavior regardless of which web browser I use.  I have restarted the app and cleared the cache, no changes.

Can someone please help me figure out what is wrong?  Aside from just digging through CSS for hours, does anyone have any specific things/items to check.  Why does switching to View mode instantly make everything display correctly?

Thank You!