{% load i18n %}

<form method="post" class="form-vertical">
    {% csrf_token %}
    {{ form.media }}
    <div class="control-group row-fluid">
        <input id="id_username" maxlength="30" name="username" type="text" style="text-align: center;" class="span12">
    </div>
    <div class="controls">
        <button type="submit" class="btn">{% trans "Login" %}</button>
    </div>
</form>