It is Handy and looks stunning, well done!
These might be helpful to further improve it:
- Use a mono font for the prepared snippet and put font preview in a different section.
- Put class declarations after all font-faces would be easier to organize and differentiate sections.
Thanks for your valuable feedback and suggestions,
i didn't quite understand your first suggestion but for the 2nd one, i will absolutely make sure to do that in this week whenever i had enough time..