Also, here's a link to a recent post about HOW TO ENLARGE photos or images on Steemit. Few Steemians use this function, probably because they do not know how to do it.

https://steemit.com/photography/@majes.tytyty/how-to-click-to-enlarge-photo-or-create-a-click-for-full-screen-link-in-12-clear-and-easy-steps

Hope this works for you.