.futuro{
    background-color: transparent;
}

.collage_v, .collage_h{
    display: none;
    width: 90%;
    margin: auto;
}

.collage_v img{
    width: 100%;
}

.collage_h img{
    width: 100%;
}

@media(orientation:landscape){
    .collage_h{
        display:block;
    }
}

@media(orientation:portrait){
    .collage_v{
        display:block;
        
    }
}