      padding: 10px 15px;
        border-bottom: 1px solid transparent;
        border-top-left-radius: 3px;
        border-top-right-radius: 3px;        
      }

      .panel-body {
        padding: 15px;
      }

  </style>
</head>

<body>
  <h1 class="text-center">Submit the form</h1>
  <div class="container" id="app">
    <div class="panel panel-default">
      <div class="panel-heading">Form</div>
      <div class="panel-body">
        <form action="https://httpbin.org/post" method="POST" enctype="app