How can I set a subheader image on single-blog-post page?

Hi,

I want all my blog posts to have a subheader image (the same image on all posts) like my pages do. Where can I set that image? At the moment I only have a grey empty area, see https://www.christine-lins.net/ren21-global-status-report-2017/ for an example.

Thanks!

Comments

Sign In or Register to comment.