body {
	font: Normal, Arial, Helvetica, sans-serif;
	margin-top: 75px;
	margin-left: 150px;
	margin-right: 150px;
	margin-bottom: 100px;
	background: rgb(206,228,250); /* Old browsers */
	background: -moz-linear-gradient(left, rgba(206,228,250,1) 1%, rgba(87,164,241,1) 8%, rgba(206,228,250,1) 49%, rgba(87,164,241,1) 91%, rgba(206,228,250,1) 100%); /* FF3.6+ */
	background: -webkit-gradient(linear, left top, right top, color-stop(1%,rgba(206,228,250,1)), color-stop(8%,rgba(87,164,241,1)), color-stop(49%,rgba(206,228,250,1)), color-stop(91%,rgba(87,164,241,1)), color-stop(100%,rgba(206,228,250,1))); /* Chrome,Safari4+ */
	background: -webkit-linear-gradient(left, rgba(206,228,250,1) 1%,rgba(87,164,241,1) 8%,rgba(206,228,250,1) 49%,rgba(87,164,241,1) 91%,rgba(206,228,250,1) 100%); /* Chrome10+,Safari5.1+ */
	background: -o-linear-gradient(left, rgba(206,228,250,1) 1%,rgba(87,164,241,1) 8%,rgba(206,228,250,1) 49%,rgba(87,164,241,1) 91%,rgba(206,228,250,1) 100%); /* Opera11.10+ */
	background: -ms-linear-gradient(left, rgba(206,228,250,1) 1%,rgba(87,164,241,1) 8%,rgba(206,228,250,1) 49%,rgba(87,164,241,1) 91%,rgba(206,228,250,1) 100%); /* IE10+ */
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#cee4fa', endColorstr='#cee4fa',GradientType=1 ); /* IE6-9 */
	background: linear-gradient(left, rgba(206,228,250,1) 1%,rgba(87,164,241,1) 8%,rgba(206,228,250,1) 49%,rgba(87,164,241,1) 91%,rgba(206,228,250,1) 100%); /* W3C */}

p {
	text-align: justify;
	text-indent: 4em;}

#en_tete {
	}

h1 {
	text-align: center;
	font-weight: bold;}
	
#corps {
	}
	
.introduction {
	}
	
h2 {
	text-align: center;
	margin-top: 100px;
	text-decoration:underline;}

.chapeau {
	}

h3 {
	text-align: center;
	margin-top: 75px;
	text-indent: 2em;}

.sous-partie {
	}

#pied_de_page {
	margin-top: 120px;}

a {
	text-decoration: none;}

a:hover {
	text-decoration: underline;
	cursor: pointer;}
	
.approfondir {
	}

span.b {
	font-weight: bold;}

span.u {
	text-decoration: underline}