OrchardCore Theming playground
You will need to have latest version of .NET Core SDK and .NET Framework to be able to run this.You can find them here: https://www.microsoft.com/net/download
Both teams were downloaded from https://startbootstrap.com/ "Free Themes" section, and then adapted to be used as OrchardCore Themes.
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Cafe Theme (Multipage website example)
Already fully transformed and ready to use. Content Types created to use this theme. Used liquid to adapt HTML and populate it with content.
NewAge theme (Landingpage example)
Working with the same content used on Cafe Theme. Only created a new Main-Menu content type.