I was trying to post an answer to this question:
a: visited img { display: none; }
But for some reason, my answer was added to the comments section instead. This is what I was trying to post (at least, I think it was formatted like this):
There's nothing wrong with your CSS, but it won't work. This is a [*security feature*][1].
[1]: https://stackoverflow.com/a/8331950/1679849
[anchor text here][1] [1]: URL goes here