Is it necessary to write <html>, <head> and <body> tags?
For example, I can make such a page:
<!DOCTYPE html>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Page Title</title>
<link rel="stylesheet" type="text/css" href="css/reset.css">
<script src="js/head_script.js"></script><!-- this script will be in head //-->
<div>Some html</div> <!-- here body starts //-->
<script src="js/body_script.js"></script>
And Firebug correctly separates head and body:
The W3C validator says it’s valid.
But I rarely see this practice on the web.
Is there a reason to write these tags?