I just got pro version 12.  I took a site I created in 11 and converted it to ver 12.  The conversion went fine.  The issue is that the header looks fine on a regular desktop but when I make the web site smaller like on a phone the header disapears.  I think I understand why but I would like some advise or a tutrial on how to create a header that looks good both way OR just what to do in general...

www.tuckpixsc.com/tucktest