@media screen and (max-width: 460px) {
    #header, footer {
        position: inherit;
        width: 100%;
        top: inherit;
        bottom: inherit;
        left: inherit;
    }
    .content-form {
        width: 100%;
    }
    #logo img {
        width: 40%;
    }
    .accroche {
        font-size: 20px;
        text-align: center;
        margin-top: 20px;
    }
    .content-page {
        margin-left: 0;
    }
    .item-list-mode-paiement {
        margin-bottom: 0;
    }
    .grid-3, .box-montant,
    .details-left, .details-right, .details-article,
    .autre-article {
        float: none;
        width: auto; 
    }
    .box-devise, .box-symbol-devise,
    .item-list-mode-paiement{
        width: 50%;
    }
    .field-l,.field-r {
        float: none;
        width: 100%;
    }
    .onglet {
        font-size: 12px;
    }
}