body {
    min-height: 100vh;
}

.didfooter {
    left: 0;
    right: 0;
}

@media screen and (min-width: 880px),
        /* Necessaria per iOS */
        screen and (min-device-width: 880px) {
    .didfooter {
        position: absolute;
        padding: 10px;
        bottom: 0;
    }
}

.nascondi{
    display: none;
}