{% load crispy_forms_tags %}
<form>
    {% csrf_token %}
    <!-- .row -->
    <div class="row">
        {% for f in filters.form %}
        <!-- .col-md-3 -->
        <div class="col-md-3">
            {{ f | as_crispy_field  }}
        </div>
        <!-- /.col-md-3 -->
        {% endfor %}
        <div class='col-md-3'>
    <input type="submit" class='btn btn-primary' value='Filter' style='margin-top:25px;'/>
        </div>
    </div>
    <!-- /.row -->
</form>
