Added quantity field, need formattation

Oh I thought that you wanted to center vertically the field with the add to cart button.
So that's what the CSS I gave is doing.

In that case, please add that CSS:

.hikashop_product_stock a.hikashop_product_quantity_field_change, a.hikashop_product_quantity_field_change:hover {
position: relative;
left: 110px;
}
.hikashop_product_stock .hikashop_product_quantity_field{
position: relative;
left: 110px;
}
.hikashop_product_stock .button hikashop_cart_input_button{
position: relative;
top: 35px;
left: 15px;
}

That will center horizontally the quantity field and put the add to cart button below it.