Correct usage of rhythmSizing? [with codesandbox]

[manuschillerdev]

Hey,

thanks for your great library! I am trying to include it in our design system, but I am not sure, if I use it correctly.
Now the output looks correct for me, but only because I fiddled around with the values of rhythmSizing until the different font-sizes matched my grid - which feels completely wrong.

Did I implement this correctly? I am sorry, that I can not specify my question any further :(
Thanks for any hints in the right direction!

https://codesandbox.io/s/modern-leftpad-3kw15