I'm working on a project where I have to support modern versions of Firefox, Opera, Safari and IE6 and higher (hell I wish MS forced upgrade to IE7 through Windows Update) which is standard approach these days. Today I downloaded the excellent IETester and out of curiosity decided to look at how my project looks in IE5.5.
As expected it was a total mess. I have no plans nor requirements to support IE5.5 but I decided to do one simple thing: just skip the CSS file in IE5.5 and earlier so the site looks like it's 1995 but consistent and it's useable.
I've used conditional comments like this
<![if gte IE 6]>
<link href="style.css" rel="stylesheet" type="text/css" />
<![endif]>
