controlling font size on a slide in powerpoint

Is there a way similar to reveal {.smaller} in pptx formats to control the font size on a specific slide in quarto?

I have text that is overflowing the templated box and I want to programmatically make the font smaller in order to get the text to fit properly.

I don't think there is unfortunately.

PPTX styling is not great through Pandoc. I am not even sure how we can control PPTX output as easily as what HTML + CSS offers.