dt {
font-weight:bold; 
font-size:120%;
width:30%;
float:left;
text-align:right;
clear:left;
color:darkblue;
margin-bottom:30px;
}

dd { 
float:left;
width:60%;
margin-bottom:30px;
}

.margehaut {
margin-top:100px;
}

.orange {
color:darkorange;
}
h4 {
font-weight:bold
}