anchor.diff:  
           .frame_info {
               right: 0;
  -            left: 40%;
  +            left: 30%;
   
               padding: 20px;
               padding-left: 10px;
  
positive.code: 
      pre, code, .repl input, .repl .prompt span, textarea, .code_linenums {
          font-family: menlo, lucida console, monospace;
          font-size: 8pt;
      }
  
      /* ---------------------------------------------------------------------
  
negative.code:         }
  
          nav.sidebar {
              width: 30%;
              left: 20px;
              top: 115px;
              bottom: 20px;
  