@media screen and (min-width:766px) {
    .merci-mobile {
        display: none;
    }

    .merci-desktop {
        width:70%;
        margin: auto;
        display: block;
    }

    .logo-secondaire_merci {
        width:10%;
    }
}


@media screen and (max-width:765px) {
    .merci-desktop {
        display: none;
    }

    .merci-mobile {
        width:100%;
        margin: auto;
        display: block;
    }

    .logo-secondaire_merci {
        width:20%;
    }

}