.bg-img {
    height: 100%;
    width: 100%;
    position: absolute;

}

.bg-img img {
    object-fit: cover;
    height: 100%;
    width: 100%;
}

#main_slider {
    visibility: visible;
}

#main_slider .item {
    position: relative;
    overflow: hidden;
}

.photo img {
    max-height: 100%;
    max-width: 100%;
}

.photo {
    display: flex;
    justify-content: center;
}