CSS with if/then browser logic

Question

For browsers < IE7, I want to use a certain style attribute, while for other browsers I\'d like to use another. Can I do this using a single css file, or do I have to do

Answer 1

Here's an example how you can include an IE6-specific CSS to override specific CSS classes for IE 6 or lower:

Alternatively, you can do it on per-element basis like this:

MSDN has some more details about IE Conditional Comments support.