Hi there,
The Site Libraries have very specific Customizer settings used to create their designs – eg. colors and typography, so importing them without those specific customizer settings will not be exactly the same.
You can of course try it:
1. Create a new Page
2. Set the Content Container to Full Width and Disable Side Bars:
https://docs.generatepress.com/article/layout-metabox-overview/
3. Switch the editor to Code view.
4. Copy the attached HTML provided here:
https://gist.github.com/diggeddy/2dada7c298579903c34cf582def831fe
5. Paste this into your code view.
6. Switch back to Visual ( block ) view.
As i said the results will not be identical but it will provide you with the layout and content that you can update to suit.