Possible Duplicate:
Is there a CSS parent selector?
Lets say I have this html
<div class="house"><span class="zombie"/></div>
<div class="house"><span class="vampire"/></div>
<div class="house"><span class="zombie"/></div>
How could I write a bit of CSS to target "div .house" that only has children with "span .vampire"? And "div .house" might not always be the direct parent of "span .zombie"