The DEMO version only includes 4 pages:
http://restaurantelosnogales.com
http://restaurantelosnogales.com/restaurante-los-nogales-muruzabal-navarra.html
http://restaurantelosnogales.com/menus-restaurante-navarra-los-nogales.html
http://restaurantelosnogales.com/carta-de-vinos-restaurante-navarra.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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