anchor.diff:  
           .dir {
               font-style: italic;
  +        }
  +
  +        @keyframes fadeinout {
  +            from {
  +                opacity: 0;
  +            }
  +            10% {
  +                opacity: 1;
  +            }
  +            70% {
  +                opacity: 1;
  +            }
  +            to {
  +                opacity: 0;
  +            }
  +        }
  +
  +        #player-comment {
  +            position: absolute;
  +            top: 5px;
  +            left: 5px;
  +            width: 600px;
  +            min-height: 1px;
  +            white-space: nowrap;
  +            overflow: hidden;
  +            font-weight: bold;
  +            color: orange;
  +            opacity: 0;
  +        }
  +
  +        .ani-blank {
  +            animation: fadeinout 0.7s;
           }
       </style>
   </head>
  
positive.code:             createPlayer();
              helpLink.leanModal({closeButton: ".lean-overlay"});
              loadDirFiles();
          });
      </script>
  </div>
  
negative.code:     <title>Hello Millky</title>
      <link rel="stylesheet" type="text/css" href="<c:url value="/webjars/bootstrap/3.3.5/dist/css/bootstrap.css"/>"/>
      <style>
          html {
              padding: 20px;
          }
  
          .video-link {
              cursor: pointer;
              display: block;
  