Let’s be clear here, just in case someone is finding this from a search engine: there are no parent selectors in CSS, not even in CSS3. It is an interesting topic to talk about though, and some fresh talk has surfaced.
a < img { border: none; }
In this example, it would select a tags but only if they contained an img tag. (Aside: this would be a weird departure from the typical syntax where the actual elements being selected are on the right, this would be on the left).
Read More At : http://css-tricks.com/parent-selectors-in-css/
