Check out example codes for "html5 snippet". It will help you in understanding the concepts better.

Code Example 1

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Untitled</title>
    <meta name="description" content="This is an example of a meta description.">
    <link rel="stylesheet" type="text/css" href="theme.css">

    <!--[if lt IE 9]>
	<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
    <![endif]-->
  </head>
  <body>
		
  </body>
</html>

Code Example 2

/*   html5doctor.com Reset Stylesheet (Eric Meyer's Reset Reloaded + HTML5 baseline)  v1.4 2009-07-27 | Authors: Eric Meyer & Richard Clark  html5doctor.com/html-5-reset-stylesheet/*/
html, body, div, span, object, iframe,
h1, h2, h2, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
del, dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, figure, footer, header, hgroup, menu, nav, section, menu,
time, mark, audio, video {
margin:0;
padding:0;
border:0;
outline:0;
font-size:100%;
vertical-align:baseline;
background:transparent;
}

article, aside, figure, footer, header,
hgroup, nav, section { display:block; }

nav ul { list-style:none; }

blockquote, q { quotes:none; }

blockquote:before, blockquote:after,
q:before, q:after { content:''; content:none; }

a { margin:0; padding:0; font-size:100%; vertical-align:baseline; background:transparent; }

ins { background-color:#ff9; color:#000; text-decoration:none; }

mark { background-color:#ff9; color:#000; font-style:italic; font-weight:bold; }

del { text-decoration: line-through; }

abbr[title], dfn[title] { border-bottom:1px dotted #000; cursor:help; }

/* tables still need cellspacing="0" in the markup */
table { border-collapse:collapse; border-spacing:0; }

hr { display:block; height:1px; border:0; border-top:1px solid #ccc; margin:1em 0; padding:0; }

input, select { vertical-align:middle; }
/* END RESET CSS */

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