Customize the quantity discount table on list of products in prstashop

Hello i would like to show discount table on product page with your module "display quantity discounts on products lists" i have prestashop 1.6.1.17. In addition: i try to center text and price in the table 
i try with globall.css or css.css ... but word and quantity are always on the left.

je cherche a centrer "quantité" , "prix unitaire" "5" "prix unitaire"

Managing the position of the module in PrestaShop

go to modules > positions and go to "transplant" feature.
transplant module you bought to hook dispalyProductButtons:

Center the text inside quantity discount table

paste this at the end of your global.css file:
.plqd th, .plqd td {text-align:center}

the effect will be: