.publicidad,
    html, 
    body,
    .body{
        background: #c3c8c8;
    }
    .mostrar-movil-cont {
        height: calc(85vh);
        display: none;
        flex-direction: column;
        align-items: center;
    }

    @media screen and (max-width: 767.98px) {
        .mostrar-movil-cont {
            display: flex !important;
        }
        .mostrar-movil-cont img {
            box-shadow: 0px 5px 10px black;
        }
    }