The DEMO version only includes 4 pages:
http://iuml-cnrs.fr
http://iuml-cnrs.fr/fr.html
http://iuml-cnrs.fr/fr/structurer-la-formation-et-la-recherche-marine-a-nantes-st-nazaire.html
http://iuml-cnrs.fr/fr/17-unites-de-recherche.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page