body { 
   color: black;
   background: white;
   margin-left: 10%; 
   margin-right: 10%; 
   font-family: sans-serif;
   }

pre {
   color: green;
   background-color: white;
   font-weight: bold; 
   white-space: pre;
   font-family: monospace;
   }

em {
   font-style: italic;
   font-weight: bold;
   }

strong {
   text-transform: uppercase;
   font-weight: bold;
   }