@media rules, in conjunction with media queries (previously only media sorts), Regulate which models are utilized and which are not based on what media the page is becoming displayed in. Phase 1: Upload the module zip file from the back again-Place of work Extensions Installer menu tab. Extensions are using https://www.presta-addons-modules.com/en/seo/prestashop-htmlcssjsonline-chatssoftware-integration.html