django-cas-server/cas_server/templates/cas_server/login.html

{% extends "cas_server/base.html" %}
{% load bootstrap3 %}
{% load staticfiles %}
{% load i18n %}
{% block content %}
      <form class="form-signin" method="post">
        <h2 class="form-signin-heading">{% trans "Please loggin" %}</h2>
{% csrf_token %}
{% bootstrap_form form %}
{% bootstrap_button _('Login') size='lg' button_type="submit" button_class="btn-primary btn-block"%}
      </form>
{% endblock %}