When creating the new site http://mercyandgraceministry.ning.com/ I added a header image to the "CAMO" theme that when saved shows up at the BOTTOM of the home page behind body content instead of the top as usual! I suspected the theme's default css and examined it but found nothing unusual.
Thank you for that reply, Dustin. You may have noticed that before you reply I had been able to move the image in question to the top by removing this theme's header's "left bottom" attribute for the position of the header. (This was there by default when I selected the theme.) I just tried different settings in CSS that seemed connected to my problem til this worked. I still cannot get the image to center despite css tweaks, and the image would not even upload in its originally created 955px-wide width to begin with.
In the past on other networks created here I just uploaded a header image and it sat wher it was expected -- this is the first time I've had to wrestle with this problem. Well until I get a response from Ning-help, I guess "the tweaks go on".