The DEMO version only includes 4 pages:
http://ozdogangrup.com
http://ozdogangrup.com/kurumsal-1-hakkimizda.html
http://ozdogangrup.com/referanslar.html
http://ozdogangrup.com/hizmetlerimiz-1-akaryakit.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 to buy a fully functioning site.
Go back to the index page