firefly-iii/resources/views/form/checkbox.twig

<div class="{{ classes }}" id="{{ name }}_holder">
    <label for="{{ options.id }}" class="
    {% if options.small %}
    col-sm-8
    {% else %}
    col-sm-4
    {% endif %}
    control-label">{{ label }}</label>

    <div class="{% if options.small %}col-sm-4{% else %}col-sm-8{% endif %}">
        <div class="checkbox">
            <label>
                {{ Html.checkbox(name, options.checked, value) }}
            </label>
        </div>
        {% include 'form.help' %}
        {% include 'form.feedback' %}
    </div>
</div>