Doesn't work with span, div elements in grid

[drewbitt]

https://replit.com/@drewbitt/PlumUnitedMonad#src/App.svelte

Noted that this works great with a h1 element, but text in a <span> or <div> it does not work. I recognize this is a tiny script and you may not want to expand it to work with non-text elements so at least some documentation on what is expected to work vs not would be great.