Clone
_slide-show.scss
ul.slides {
    position: relative;
    height: 300px;
    padding: 0px;
    margin: 0px;
    list-style-type: none;
}

li.slide {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 1;
    background: #333;
    background-size: cover;
    color: #fff;

    -webkit-transition: opacity 1s;
    -moz-transition: opacity 1s;
    -o-transition: opacity 1s;
    transition: opacity 1s;

    .content {
      position: absolute;
      bottom: 0;
      width: 100%;
      background: rgba(0,0,0, 0.75);
    }
}


li.showing {
    opacity: 1;
    z-index: 2;
}