{% macro submit_form(button_text, back_link=False) %}
  <div class="submit-form">
    <input type="hidden" name="csrf_token" value="{{ csrf_token() }}" />
    <input type="submit" class="button" value="{{ button_text }}" />
    {% if back_link %}
      <a class="submit-form-back-link" role="button" href="{{ back_link }}">Back</a>
    {% endif %}
  </div>
{% endmacro %}