html {
    background: url("../images/hg.jpg") no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

body {
    background: transparent;
    margin: 0;
    padding: 0;
}

.site-grid, .body-innerwrapper, .container-component {
    background: transparent !important;
}