The author "Rubí Mendoza" is inside a div with class "hide", which is defined by the foundation css. See: http://imgur.com/a/tSkVW and http://imgur.com/a/qHfHG. That is: "...In less obvious cases, what the user sees when viewing the original article in an ordinary browser has <b>priority</b> over invisible meta-information..." (Clarification 6.1 Author name)... and still in this part: "...Author name is required only if it is presented in the source article in a clear way (at the top of the page, at the <b>very end of the text</b>, in the meta tags etc.), especially if there's a name of an actual person... (Clarification 6.1 Author name).