.pd-img-cam-1 {
    background-image: url(../img/produit/cameras/camera_1.jpg)
}

.pd-img-cam-2 {
    background-image: url(../img/produit/cameras/camera_2.jpg)
}

.pd-img-cam-3 {
    background-image: url(../img/produit/cameras/camera_3.jpg)
}

.pd-img-cam-4 {
    background-image: url(../img/produit/cameras/camera_4.jpg)
}