You are viewing from a normal computer.

You are viewing from a handheld device.

You are viewing from a projector.

You are viewing from a television.

You are viewing from a printed page - or in a print preview.

You are viewing from an iphone, android phone or similar smartphone.

You are not using IE6, IE7 or IE8.

You are using IE8 or below.

You are using IE7 or below.

You are using IE6 or below.

IE6 and below will use CSS declarations prefixed with an underscore "_". IE7 and below will use CSS declarations prefixed with an asterix "*". IE8 and below will use CSS declarations suffixed with "\9". If you are not in standards compliant mode, IE7 will also use the underscore rule. There is no way that I'm aware of to target IE7 specifically in quirks mode. Although IE7 claims to render exactly the same in IE6 while in quirks mode, there are some subtle differences.