todo_app_flask/app/auth/templates/two_factor_input.html

<style>
#totpp {
  margin-top: 10%;
  margin-bottom: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 50px;
  justify-content: space-between;
}

#submitContainer {
  display: flex;
  justify-content: center;
}

#submit {
  margin-top: 30px;
}

h3 {
  align-self: center;
  margin-top: 10%;
}
</style>

{% extends "base.html" %}

{% block content %}
      <h3>{{ inst }}</h3>
  <div class='formContainer'>
    
    <form action={{ url_for('totps.two_factor_input') }} method="post" novalidate>
      {{ form.hidden_tag() }}
      <p id="totpp">
        {{ form.totp_code.label }}<br>
        {% for error in form.totp_code.errors %}
        <span class="formWarning">[{{error}}]</span>
        {% endfor %}
        {{ form.totp_code(size=6) }}
      </p>
      <p id="submitContainer">{{ form.submit() }}</p>
    </form>
  </div>
{% endblock %}