Add quantity button to product list

[cylvain]

I want to add a quantity button and an add to cart button to the product list, the problem is that the arrows to increase or decrease the quantities do not appear. (for me these arrows are important because I have minimum quantities and step)

<form action="{$urls.pages.cart}" method="post">
                      <input type="hidden" name="token" value="{$static_token}">
                      <input type="hidden" value="{$product.id_product}" name="id_product">
                      <input type="number" style="padding: 9px 10px; float: left; width: 30%; margin-left: 10px;" class="input-group form-control" name="qty" min="{$product.minimal_quantity}" value="{$product.minimal_quantity}" step="{$product.minimal_quantity}">
                      <button style="float:left;margin-left: 13px" data-button-action="add-to-cart" class="btn btn-primary">Ajouter au panier</button>

                  </form>

Thanks for your help