#sfondo-visore::after {
    content: '';
    background-color: black;
    opacity: 0.3;
    height: 100%;
    width: 100%;
    position: absolute;
}

.contenuto-visore {
    position: relative;
    z-index: 1;
    height: 100%;
    max-width: 700px;
    display: flex;
    flex-direction: column;
}

@media screen and (max-width:767px) {

    .contenuto-visore {
        padding-bottom: 60px;
    }

}