failure.html

<!DOCTYPE html>
<html lang="en">
  <head>
  	<title> Failure</title>
    <!-- bootstrap -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <!-- font awesome -->
    <script defer src="https://use.fontawesome.com/releases/v5.0.7/js/all.js"></script>
    <link rel="icon" href="favicon.ico" />
  </head>
  <body>
  	<div class="jumbotron jumbotron-fluid">
  	<div class="container">
    <h1 class="display-4">Oh no! </h1>
    <p class="lead">There was problem in posting. Please try again or contact the developer!</p>
    <form  action="/" method="GET">
      <button type="submit" class="btn btn-lg btn-warning"><i class="fas fa-undo-alt"></i> Try Again</button>
    </form>
  </div>
</div>
  </body>
</html>