.contenu-centre
{
    display: block;
    position: relative;
    max-width: 80rem;
    margin: 0 auto;
    font-family:"sourcesanspro", Arial, Helvetica, sans-serif;;
}
.fond-gris
{
    background-color: #f7f7f7;
}
.texte-centre
{
    text-align:center;
}
.contenu-aligne-banniere
{
    position: relative;
    margin: 0 auto;
    width: 90%;
    max-width: 75.5rem;
}
.sans-banniere
{
    padding-top:2em;
}
@media screen and (max-width: 48em) {
    .contenu-centre
    {
        padding:0 1em;
    }
}