So I am trying to make sugarcube buttons the same size with different text. E.g.
I first tried adding a non-breaking space either side of the "six" to bring it up to five characters, but a nonbreaking space entity doesn't register - it gets typed out in full in the buttons.
Is there another way to do this?
That said, unless you've changed the font to be monospaced, you're never going to be able to get the widths perfect doing that—and it's kind of a hassle anyway. You're better off using some HTML & CSS to set the widths of the generated <button> elements. For example: