html,body {
    /*background: linear-gradient(to bottom, #afafaf 0%,#383838 100%);*/
    /*background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#afafaf), color-stop(100%,#383838));*/
    /*background: -webkit-linear-gradient(top, #afafaf 0%,#383838 100%);*/
    background-image: url("/img/background/light_lightning.jpg");
    background-attachment: fixed;
    background-size: cover;
    background-position: left;
    height: 100%;
    overflow-x: hidden;
}