Quanity and Cart centered

-- url of the page with the problem -- : coffeemachineparts.com.au/index.php/coff...-intelia-spare-parts
-- HikaShop version -- : 3.1.1
-- Joomla version -- : 3.7.3
-- PHP version -- : 5.6.29
-- Browser(s) name and version -- : Chrome

Hello, we recently upgraded to HS 3.1.1 and need some help please. On the page of the URL , where and how can we align the quantity and cart to the center please? Have been poring over the forums for over a week and although we have managed all the other changes, this one is alluding us.
Thanks

Hello,

You're using the legacy "add to cart" system ; so it would require the legacy CSS file or some custom CSS to keep the compatibility. For more details about CSS : www.hikashop.com/support/documentation/1...the-display.html#css

Regards,

Thank you Jerome, that solved the problem.