.ctl-background-slide,
.ctl-background-slide-overlay,
.ctl-background-slideshow{
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    z-index: -1;    
}

.ctl-background-slideshow{
    overflow: hidden;
}

.ctl-background-slide img{
    object-position: center;
    object-fit: cover;
    height: 100%;
    width: 100%;    
}