Also, you can make your logo center by adding this to the responsive section (iPhone and iPad sections) –
#header {
background-position: center top;
}
in addition to the other suggestion.
I’ll be creating a much needed tutorial on how to add a header, how to make it responsive and a few other things since there isn’t much out there that explains how to do this…..which is surprising.
Nick Kroft created a plugin that handles it – http://designsbynickthegeek.com/plugins/genesis-responsive-header ….This is for anyone who doesn’t want to deal with the code.
Hopefully I’ll have that tutorial and many others very soon.