.remerciement #accrochePage,
#accrochePage{
    width: auto;
    margin: auto;
    border-radius: 15px;
}

.marge2 {
    margin: 20px auto;
}

@media all and (min-width: 500px) {
    .marge2 {
        margin: 30px auto;
    }
}
@media all and (min-width: 1000px) {
    #accrochePage {
        width: 100%;
        padding: 0;
    }
}