body {
  topmargin ="200" 
  leftmargin="100" 
  padding-left:11em;
  Font-family:Georgia,"Arial Narrow",
    Times,serif;
    color:#000000 ;
    background-color:#ffffff }

  h1 {

     font-family: Constancia, Helvetica,Geneva,Arial Narrow,
      SunSans-Regular,sans-serif }

   a:link {
       color:blue}
    
   a:visited { 
       color:#3399FF}


    ul.materias {
      list-style-type: none;
       padding: 0;
       margin :0;
       top: 2em;
       left: 1em;
       width: 15em }
                 
    ul.materias li{ 
       background: white;
       margin:0.5em 0;
       padding:0.3em;
       border-right:1em solid black
                                   }