Spotify custom backgrounds User CSS

._1YMukI_FrE7QRuUVSvq_Qe::after {
    content: "";
    background: url("http://i.imgur.com/EnqXkBq.jpg")!important;
    opacity: 0.5;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    position: absolute;
    z-index: -1;
}
._1YMukI_FrE7QRuUVSvq_Qe {
    background-image: linear-gradient(rgb(0, 0, 0), rgb(0, 0, 0) 85%);
}