I'm building a custom Thematic child theme where I would like to have the option to add a full-width banner image across the top of each page
Seems that the Featured Image option would suit this perfectly, but I'm unable to find much info on how this can be customised
I notice that setting a featured image on the standard Thematic theme displays a small version of the image right-aligned, but it doesn't display anything in my child theme
Is there any info available as to how this option can be used?
The next step would be for me to understand how such a banner image could be automatically sized for full-width or standard layouts