Wordpress twenty thirteen theme. I have no idea how this arose. The opening page had a header image which started just beneath the green menu bar to just above the main central (yellow) text panel. Having noticed the image had gone, I tried to restore by going into customise and restoring the image. This only resulted in the image being displayed as a background image, not what I wanted.
Another page within the site shows another header image and how I want the front page to look:
The image I want on the front page is:
The image size is 1366×650 whilst the recommended size is 1600×630. The image displayed previously in its entirety without cropping. Any ideas on how to restore the image on the front page?