body 
     {
       background-image: url(circuit.png);
       background-color: white; 
       color: black
       }
    a {color: blue}
    a:visited { color: darkblue; }
    cite { color: darkslategray; }
    h1, h2, h3, h4, h5, h6 { color: brown; }
    table { color: black; }