{% macro input(id, label, type='text', description='', placeholder='') %}
  <div class="form-group col-lg">
    <label for="{{ id }}">{{ label }}</label>
    <input type="{{ type }}" class="form-control form-control-sm" id="{{ id }}" aria-describedby="{{ id }}Help" placeholder="{{ placeholder }}">
    <small id="{{ id }}Help" class="form-text text-muted">{{ description }}</small>
  </div>
{% endmacro %}