.wn-parallax {
    position: relative;
    overflow: hidden;
}

.wn-parallax .wn-parallax-bg-holder {
    position: absolute;
    top: 0px;
    left: 0px;
    z-index: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.wn-parallax .wn-parallax-bg-holder .wn-parallax-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    width: 100%;
    height: 100%;
    z-index: 20;
}