None of the files are on a server, yet; they're all resting safe on the thumb drive (within the XAMPP htdocs file, so that I can test the PHP).
The css file is located at H:/xampp/htdocs/styles/file.css (No http)
But for some reason, the following doesn't work:
As I said, using absolute paths once everything's moved to the server...
<link href="H:/xampp/htdocs/styles/file.css" type="text/css" rel="stylesheet" />
...works great. So the only trouble I'm having is while I'm designing the site on my local computer. I could just use relative paths until I move it online, but that seems like the coward's way out. What I'd like to do is just use PHP's $_SERVER['DOCUMENT_ROOT'] and stop thinking about it. Is it still doable?
<link href="http://www.mydomain.com/styles/file.css" type="text/css" rel="stylesheet" />