Pointing toward a top-level style sheet in all directories
<p>I have a html_headers.inc.php script that I want to include in every script on the site, to drop in a style sheet, the headers of the page, etc.</p>

<p>It refers to main.css as the stylesheet to use, but when I get down into a subdirectory, i.e. /foo, the link obviously breaks because it's pointing to main.css and not ../main.css. What's the best way to guarantee it always points toward that top-level where main.css lives? I've got </p>

<p><code>http://&lt;?= $_SERVER['HTTP_HOST']; ?&gt;/main.css</code> </p>

<p>working, but it seems like there must be a more correct way.</p>
