I am sorry about the bother here. There was some custom CSS added to something else on the site that was interfering with the proper operation of the header.
However, I am unable to adjust the HEADER WIDTH without causing the same issue as seen in my original post. The menu items on the left are too large for the header width unless I reduce the font size and spacing to make them small enough to fit, and that is too small. Is there a particular setting or CSS that can be changed to widen up the header in a vertical position that will not cause it to quit operating properly?