table.data {
      border: solid black 2px;
      border-collapse: collapse;
   }
   table.data td { padding: 0.4em; border: solid grey  1px; }
   table.data th { padding: 0.4em; border: solid black  1px; }
   pre           { border: solid lightgrey 2px; margin-left: 3em; padding: 0.5em; }
   p             { margin-left: 3em; }