Cascading Style Sheets Standards Compliance Blues

The Web Standards Project talks about the problems of complying with standards:

We've all been there.

You've got a blog. You've spent hours getting the templates and CSS just right. It even validates. You are the model of a cool, modern, standards aware webblogger.

So you post a new entry to let the world know that you are now compliant. You even include a link to the validation results for your page so your readers can see for themselves. You go out for a drink to celebrate a job well done.

When you get home, your inbox is full. It is all the same thing, from visitors to your site. They're saying that your page doesn't actually validate. "But that can't be" you say "I just got through validating it and I haven't changed the templates since. All I did was post one entry."