anchor.diff:  input[type="submit"]:hover{
   color:black;
   }
  -.navbar li:hover {
  -    background-color: black;
  -    color : white;
  -    }
  +.navbar .nav>li>a:hover {
  +color: black;
  +}
   .nav .active .dropdown-toggle .caret {
   border-top-color: black;
   border-bottom-color: black;
  
positive.code:       });
      </script>
      <style>
        body{
          margin-top: 41px;
        }
  
negative.code:     </style>
  
      <div class="navbar navbar-fixed-top">
        <div class="navbar-inner" >
          <div class="container">
            <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
              <span class="icon-bar"></span>
  