I have successfully modified 'header.html' to include a graphic but can't seem to get the graphic to fill the header area with no margin.
Which file(s) - presumably .css - do I need to amend to set the margins to zero?
Harry, the margin usually is in the "*layout*" style sheet. Try adding "margin: 0px;" to the BODY tag.
Thanks for that, Andrea. Setting the margin to 0px doesn't seem to make any difference, unless I have a cached pages issue.