section:nth-child(1){
    background-image: linear-gradient(transparent, black), url(Images/bmw-electric-car.jpg);
}

section:nth-child(2){
    background-image: linear-gradient(transparent, black), url(Images/bmw_100793410_h.jpg);
}

section:nth-child(3){
    background-image: linear-gradient(transparent, black), url(Images/hp-i4-gran-coupe.jpg);
}

section:nth-child(4){
    background-image: linear-gradient(transparent, black), url(Images/bmw-x-series-ix-highlights-desktop-04.jpg);
}

section:nth-child(5){
    background-image: linear-gradient(transparent, black), url(Images/2022-bmw-ix3_100802056.jpg);
}