Yay, I fixed it! Thank you so much for your help, that made things a lot easier. And thank you for a great theme!
Ah, that works, but unfortunately it only changes the caption on the featured image – most of my posts have at least two images. If I want all images to always have the stylised caption, regardless of post format, is it just a matter of changing the default caption style class in a child theme to match the featured image style class?
Thank you again for your help 🙂
I think what Jockel was asking with number 2 (and I have the same question) is not how to add a caption to a photo, but how to get it to have the same style as the one in your demo, with the caption hovering over the photo rather than below it. If you look at this post, for example, it seems to be using some default caption style rather than your really cool one.
By the way, I love this theme! Thank you for taking the time to make it and support it.