.nb-image-reveal-v4{
    position: relative;
}
.nb-image-reveal-v4[data-flickering="1"]{
    opacity: 0;
}
.nb-image-reveal-v4__image{
    width: 100%;
    height: 100%;
}
.nb-image-reveal-v4__mask{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}