@Declan1991Aug 08.2008 — #The child hack (not really a hack anymore) gives the rule to more modern browsers (all recent versions of Firefox, Opera and Safari, and IE 7+). It's the child selector, and will only select direct descendants.<i> </i><!-- selector: #outer > div --> <div id="outer"> <div> <!-- Gets me --> <div> <!-- doesn't get me --> </div> </div> </div>
The backslash hides the rule from IE 5.x, it's known as the box model hack, and was normally used to give an alternative width to divs for IE 5.x since the box model was broken badly in that browser.