I looked it up on Steemit (amazing what you can find on here) - this post explains positioning photos - https://steemit.com/steemit-help/@krnel/how-to-align-images-in-steemit-posts-left-right-and-center but what I found is when you put Steemit uploaded images in the DIV container some of the image line text gets shows - so basically you have to delete the part of the image line that says [![myimage.png]( and the bracket at the other end end so you are left with https://steemitimages.com/ and then it works ok.