body {
    margin: 0 auto;
    padding: 10px;
    font-size: 17px;
    font-family: Arial, helvetica, verdana;
    line-height: 36px;
    background-color: #333;
    background-image: url(bg2.jpg);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    background-attachment: fixed;
}