#bureau_etude {
float: left;
margin-left: 25px;
}
#encart_droite {
margin-left: 240px;
margin-bottom: 50px;
padding-bottom: 30px;
background: transparent url(composants/encart_droite_background.gif) bottom right no-repeat;
}
#encart_droite h3 {
margin-left: 25px;
}