<!doctype html> <html>

<head>
  <meta charset="utf-8">
  <title>Invoker</title>
  <style>
  body {
    margin: 0;
    padding: 0;
    background: #fff;
    line-height: 18px;
  }
  div.page {
    padding: 36px 90px;
  }
  h1, h2, p, li {
    font-family: Helvetica, sans-serif;
    font-size: 13px;
  }
  h1 {
    line-height: 45px;
    font-size: 36px;
    margin: 0;
  }
  h2 {
    line-height: 27px;
    font-size: 18px;
    font-weight: normal;
    margin: 0;
  }
  </style>
</head>
<body class="">
  <div class="page">
    <h1>Bad request</h1>
    <hr>
    <h2>Invoker couldn't understand the request</h2>
  </div>
</body>

</html>