Probléme CSS

html {
	background: #ddd;
	
	}
html, body {
	height: 100%;
	margin: 0;
	}
/* bloc contenant l'ensemble des autres blocs*/
div#global {
	min-height: 100%;
	width: 900px;
	padding: 0 10px;
	margin: 0 auto;
	position: relative;
	padding: 0 10px;
	padding-top: 10px;
	border: 1px solid #AAA;
	background-color: #EEE;
	}
/* bloc permettant de centrer le contenu du site dans le bloc contenu*/
div#center {
	/* Pour ?viter la superposition 
	du pied de page et du contenu : */
	padding-bottom: 50px; 
	overflow: auto;
	background-color: #EEE;
	}
/* bloc du pied de page*/
div#footer {
	position:relative;
	width: 100%;
	bottom: 20px;
	text-align:center;
	background: #abcdef
	color: #fff;

	}
/* bloc du contenu*/
div#content {
	float:right;
	width: 670px;
	margin-left: 10px;
	border: 1px solid #AAA;
	}
div#sidebar {
	float:left;
	width: 200px;
	background-color: #EEE;
	color: #000;
	border: 1px solid #AAA;
	}
div#header {
	background: #abcdef
	color: #fff;
	height: 201px;
	position: relative;

	}
div#header h1 {
	margin: 0;
	position: absolute;
	bottom: 10px;
	left: 30px;
	font: 3em Georgia, serif;
	}

body {
margin: 10px 0 ;

	font: 90% "Trebuchet MS", sans-serif;
}
div#content h2 {
	padding-left: 35px;
	background: #fff;
	color: #6c0;
	}
div#content h3 {
	color: #c00;
	font-variant: small-caps;
	}
div#footer p {
	margin: 2px 0;
	font-size: 0.9em;
	}
a {
	color: #6c0;
	font-weight: bold;
	}
a:hover {
	color: #c00;
	}

<!--[if IE]>
#global {
	height: 100%;
	}
#content {
	display: inline;
	}
#center {
	overflow: visible;
	height: 1%;
	}
#content, #sidebar {
	margin-top: 15px;
	}
#global {
	position: static;
	}
a, pre {
	position: relative;
	}
body {
	position: relative;
	}