body {
    margin-right: 5em;
    margin-left: 5em;
    background: white;
    color: black;
  }

  a:link { color: blue }
  a:visited { color: maroon }
  a:active { color: green }
  
  a img { border: 0px }

  hr { size: 1px }

  #symbol {
    font-family: symbol;
  }

  #helvetica {
    font-family: helvetica;    
  }

  img {
    margin-right: 10;
    margin-left: 10;
    margin-bottom: 10;
  }

  img#dd {
    margin-right: 5;
    margin-left: 12;
    margin-bottom: 0;
  }

  img#zero {
    margin-right: 1;
    margin-left: 1;
    margin-bottom: 0;
  }