form.html

{% extends "base.html" %}
{% load i18n bootstrap4 %}

{% block content %}
    <form method="post">
        {% for error in form.non_field_errors %}
            <p class="alert alert-danger" role="alert">{{ error }}</p>
        {% endfor %}

        {% csrf_token %}

        {% bootstrap_form form.forms.subject %}
        {% bootstrap_form form.forms.address %}
        {% bootstrap_form form.forms.city %}
        {% bootstrap_form form.forms.country %}

        <input type="submit" class="btn btn-primary" />
    </form>
{% endblock %}