Within the Structuring content with HTML module, we coated what HTML is and how it's used to mark up documents. These documents might be readable in an internet browser. CSS is Among the many core languages in the open Internet which is standardized across Internet browsers according to W3C specifications. https://www.presta-addons-modules.com/en/seo/prestashop-seo-friendly-url-pretty-url-without-id-number.html