While in the Structuring content with HTML module, we protected what HTML is and how it is utilized to mark up documents. These files is going to be readable in an online browser. Try it Your self » The exterior design sheet might be written in almost any text editor. https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html