Setting Margins to 0 in PHP? (Should be simple)

Hello there, I’m a NewBie at PHP so don’t laugh! How do I set the margins to 0 in a PHP page?
Here’s the code I have:

<BODY BGCOLOR=#FFFFFF LEFTMARGIN=0 TOPMARGIN=0 MARGINWIDTH=0 MARGINHEIGHT=0>
<?php include ("header.php"); ?>
<?php include ("main.php"); ?>
<?php include ("footer.php"); ?>

It DOES work, but in Dreamweaver’s Design view, it says:
Untitled Document </head>
The </head> is highlighted in yellow…but when previewing in IE, everything looks fine. I just want to code it correctly :slight_smile:
Thanks!