I want to have a solid border around my images (in all posts/pages), but then I want spacing OUTSIDE of that border (just to separate the images from the rest of the post-contents).
I notice that "Padding" adds padding between the border and the image. But I want to add it on the outside of the border. How do I do this?
I tried typing "spacing: 15px", "margin: 15px" etc. but I can't seem to make anything happen.
What's the magic word here???