body
{
	width: 800px;
	background: #ff9000;
	margin: auto;
	text-align: center;
}

#presentation
{
	margin-top: 10px;
	background: url("../img/acces_site.jpg") no-repeat;
	width: 800px;
	height: 532px;
}

#lien_site
{
	position: relative;
	top: 404px;
	display: block;
	height: 60px;
	width: 520px;
	margin-left: 155px;
}

#lien_off
{
	position: relative;
	top: 415px;
	display: block;
	height: 40px;
	width: 256px;
	margin-left: 281px;
}