app/templates/signin.html

{% extends "base.html" %}
{% block title %}Serverless Store: Checkout{% endblock %}
{% block navbar_end %}{% endblock %}
{% block content %}
  <div class="container">
    <article class="message">
      <div class="message-header">
        <p>Redirection</p>
      </div>
      <div id="message_body" class="message-body">
        Processing...
      </div>
    </article>
  </div>
{% endblock %}