Here is some code which i recently wrote. I imagine that it provides a standard rationalization of mixing course/ID names with pseudoclasses. - Module operates without building any transform in the existing PrestaShop file so that current customization and concept transform don't have an affect on. In the intervening time https://www.presta-addons-modules.com/en/free-modules/prestashop-scroll-to-top-of-page-move-on-a-page-from-bottom-to-top.html