body {
	background:#000000 url(images/fond.jpg);
}

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


#navlist_index {
margin-left: -40px;
margin-top: -16px
}

#navlist_index li {
float: left;
list-style-type:none;
text-align: left;

}

#navlist_index li a {
width: 600px;
height: 600px;
filter:alpha(opacity=0);
-moz-opacity:0;
opacity:0;
display: block;
color:transparent;
font: normal bold 30px/30px Helvetica,sans-serif;
text-decoration: none;
}

#navlist_index li a:hover {
filter:alpha(opacity=50);
-moz-opacity:0.5;
opacity:0.5;
background-color: #A11B20;
color: #fff;
}

.opti {
  color:#333333;
  font-size: 10px;
 }