.section-imgtxt {
    content-visibility: auto;
    contain-intrinsic-size: 500px;
}

.section-imgtxt .wrap-embed iframe {
    width:100%
}

.section-imgtxt img {
    height: 100%;
}

@media screen and (min-width:768px) and (max-width:992px) {
    .section-imgtxt img:not(.icona) {
        height: 400px;
        object-fit: cover;
    }
}