I used the Carrera template to rebuild this project mainly because I needed one of the Nav items to be a dropdown. It works fantastically. Except when I go from the wide down to even a tablet. Then the menu just disappears. This is a big problem for me now, as I did not look for or expect that, and I have built the rest of the site. Everything else responds correctly. Can this be fixed, or am I starting over again? I was expecting it to drop into a hamburger!

well if it cannot be corrected you could use one of the menu components in sd there are 2 with dropdowns
or even go to CC components library and they have a whole collection od dropdown menus t
you can install

You didn't by any chance change the visibility for the font icon toggle menu thingy at smaller widths or even change it at larger width, or even accidentally delete it, (look on the inspector pane for it somewhere near the top of the page)

Good call. I found the issue in "Hide 2 items in this breakpoint". I hid the dropdown menu, but that only affects my working screen, not the end product. Somehow, this one does affect the site, though I did not know it was there. Thank you. You answered other questions for me; two are still open as I am building the forms and flipbooks now. I'll respond back in those discussions when I know anything.