The selector portion of the CSS rule targets which XHTML tags/classes this rule will be applied to. At first glance, it looks like all img tags as well as all tags with a class of "png". You’ll notice the * html in front of both of these. Wait, there is no “anytag” preceding the html tag, so this won’t get applied! True. For all non-crappy (that is a pro term by the way) browsers, this rule won’t get applied. However, since IE6 is a pile, it thinks that there is a tag before the html tag, so it will apply this rule. Great! Now IE6 is the only browser that will use this rule.