body {
	background-color: #FF3399;
}
<style type="text/css">

.scrollable {

height: 100%;

width: 100%;

overflow: auto;

}
.conteneur1 {
	text-align: center;
	background-color: #FF3399;
}
.centre2 {
	margin-left: auto;
	margin-right: auto;
	margin-top:80px;
	width: 400px;
	text-align: center;
	background-color: #FF3399;
	padding: 0.5em;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #000000;
	font-style: normal;
}
a {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #666666;
}