It’s very easy. In your downloaded package from ThemeForest, you can find the exported file of these pre-made skins. Simply import them in your Theme Options and that’s it! Your new Vertikal powered site will not look like these demo skins.
You can simply enable or disable AJAX Navigation in the Theme Options
And Much More!
These are pre-made skins of Vertikal which you can enable them on your site easily. Please note that these sample sites are loading with Ajax which you can simply enable/disable it through your Theme Options page.