#bg-1 {
    background-image:url(../assets/img/background/01-background.jpg)
}

#bg-2 {
    background-image:url(../assets/img/background/02-background.jpg)
}

#bg-3 {
    background-image:url(../assets/img/background/03-background.jpg)
}

#bg-4 {
    background-image:url(../assets/img/background/04-background.png)
}