The DEMO version only includes 4 pages:
http://lyceemistralnimes.net
http://lyceemistralnimes.net/embed/9nMYa_X5EUw_ext_iframe.html
http://lyceemistralnimes.net/le-mot-de-la-proviseure.html
http://lyceemistralnimes.net/frederic-mistral-poete-provencal.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.
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