.banner2.sala-1 .banner{
    background-image: url(banner/images/bg-bingo-75.jpg); 
}
.banner2.sala-2 .banner{
    background-image: url(banner/images/bg-bingo-90.jpg); 
}
.banner2.sala-1 .timeline,
.banner2.sala-2 .timeline{
    background-color: red;
}