exam/app/templates/registration/register.html

{% extends 'base.html' %}
{% block content %}
<div class="jumbotron jumbotron-fluid">
  <div class="container">
    <h1 class="display-4">Регистрация</h1>
    <form  method="post" enctype="multipart/form-data">
        {% csrf_token %}
        {{ form.as_p }}
        <input type="submit" value="Войти">
    </form>
  </div>
</div>

{% endblock %}