These should get the same border treatment as blog posts. The problem here is that I am targeting images that are children of ".node .content". For some reason Front page blog posts don't have a .node class. Perhaps I can just drop .node form the selector and target only .content. Will require testing though.
svncm "Bug 561112 - front page blog post images not getting styled" Sending all/themes/drumbeat/css/style.css Transmitting file data . Committed revision 513.