@media rules, in conjunction with media queries (previously only media types), Manage which types are used and which are not based on what media the page is remaining shown in. - Helps to redirect the customer into the right keep URL with the shipping strategy as per the customer's country https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html