W3c is your body that attempts to standardize this stuff, they produce the rules, then programmers produce their rendering motor to interpret All those regulations. I've made two stores with in the same domain for my prestashop site.1 with the customers belong to my country together with other shop for https://express-page.com/story4762821/prestashop-live-chat-support-with-zopim-zendesk-chat-an-overview