Here are some bits of code you need to keep the W3.org validator and your instructor happy.
<html> tag.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html> tag. It looks like this:<html xmlns="http://www.w3.org/1999/xhtml"><head></head> tags for pages that will be hosted on the webhawks.org server.<meta http-equiv="content-type" content="text/html; charset=utf-8" />
</body>).<p>
<!-- validator code using text links -->
<a href="http://validator.w3.org/check?uri=referer">Validate
XHTML</a>
|
<a href="http://jigsaw.w3.org/css-validator/check/referer">
Validate CSS</a>
<!-- end validator code using text links -->
</p>