.box_hero{
    position: relative;
}

.box_hero_bg{
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
}

.box_hero_bg img, .box_hero_bg video{
    max-width: 100%;
    height: 100%;
    width: 100%;
    object-fit: cover;
}

.bgr{
    z-index: 2;
}