body {
margin: 0;
padding: 0;
}

#centre {
position:absolute;
left: 50%;
top: 50%;
width: 800px;
height: 600px;
margin-top: -300px;
margin-left: -400px;
}

.formufond {
background-image:url(images/ecran3_03.gif);
}

#amis {
margin-left:20px;
margin-right:25px;
margin-top:20px;
}

.formu1 {
background-image:url(images/ecran2_02.gif);
}

.formu2 {
background-image:url(images/ecran2_04.gif);
}

.formu3 {
background-image:url(images/ecran2_05.gif);
}

#identity {
margin-left:30px;
margin-right:20px;
}

#ask {
margin-left:20px;
margin-right:25px;
margin-top:0px;
}

#optin {
margin-left:20px;
margin-right:25px;
}