.contacto-bg-white {
    height: 1200px;
}
@media only screen and (max-width: 576px) {
    .contacto-bg-white {
        height: auto;
    }
    .contacto-bg-white div:nth-child(1) h2 {
        margin-top: 140px;
    }
}
@media only screen and (min-width: 577px) and (max-width:992px) {
    .contacto-bg-white {
        height: auto;
    }
    .contacto-bg-white div:nth-child(1) h2 {
        margin-top: 140px;
    }
}
@media only screen and (min-width: 993px) and (max-width:1500px) {
    .contacto-bg-white {
        height: 900px;
    }
}