Ah ha, that did the trick! Thanks so much for your help!
Hmmm…I wonder what I’m doing wrong. I installed the Simple Custom CSS plugin, then copied the code in, changing the post ID accordingly. But the vertical photos still stretch.
http://cherylhill.net/photography/2015/11/02/warner-mountain-lookout/
http://cherylhill.net/photography/2012/11/03/elowah-falls-in-autumn/
So every time I post a new vertical photo I’d have to go in and add that code with the post ID?
Do I add this code to the content.php page, or a different page?
I’m having this same problem today and I am using GoDaddy. Is this a known issue with them? My post is only about 9,000 characters so it’s not really that long.