body {
            color:white;
            background-color:black; 
            font-family: Verdana, Arial, Helvetica, Geneva, SunSans-Regular, sans-serif;
            margin-right:10%
           }
        h1 {
            color:red;
            font-size:150%pt 
           }
        h2 {
            color:orange;
            font-size:130%pt 
           }
        h3 {
            color:yellow;
            font-size:110%pt 
           }
A:link {color: yellow ; }
A:visited {color: orange ; }
A:active {color: red ; }
        .intro    {color:#00FF00}
        .centered {text-align: center}

/* Nav frame definitions */

        .L1 {
          margin-left:15%;
          font-weight:bold;
          font-size:120%pt 
        }
        .L2 {
          margin-left:20%
        }