root { 
    display: block;
}

body {
    font-family:Tahona;
    margin: 0 auto;
    width:1260px;
}

.banniere {
    background-color:white;
}


.authentification {
    margin: 0 auto;
    border-style:ridge;
    padding-left:2em;
    margin-top:6em;
    width:600px;
}