Perhaps we should also make the lyrics string uppercase to match what the html output does with lyrics.

I have thought about it and come to the conclusion that I don't think we should do that, probably not in the html output either. I feel that Rustwell exports primarily should force the margins and such on the user content, but other than that it should be up to the user to make sure that they follow the screenplay standard they choose to follow (as there is no single standard standard). This is also why I think it's good that almost everything the user writes is a RichString so that the user can choose to have formatting in all elements, even thought it's not necessarily "standard".

Then perhaps this PR should remove it from the css as well?