.soustitre2{
position: absolute; 
width: 300px; 
height: 39px; 
left: 50%; 
margin-left: 25px;
top: 130px;
font-size:22px;
}

.soustitre3{
position: absolute; 
width: 332px; 
height: 39px; 
left: 50%; 
margin-left: -100px;
top: 175px;
}

.infos{
position: absolute;
left: 50%; 
margin-left: -30px;
top: 280px;
text-align: center;
}

.contenu_reservation{
position: absolute; 
left: 50%; 
margin-left: -38px;
top: 390px;
}