html {
    /*
    background-image: repeating-linear-gradient(
        to bottom,
        #333,
        #333 9px,
        #111 9px,
        #076060 16px,
        #076060 17px);
    */
    background-image: 
        repeating-linear-gradient(
            to bottom,
            #444,
            #444 12px,
            #101010ff 12px,
            #10101000 18px,
            #10101000 20px
        ),
        repeating-linear-gradient(
            45deg,
            #f51,
            #399
        );
    background-attachment: fixed;
}

body {
    background: #222222;
}