Changing font size in twenty twenty one theme

Hi,

I’m trying to find a way to change default font size – for all pages and posts. I have the ‘twenty twenty one’ theme. Looking around in the ‘customize’ option, I don’t see any way to change the typography. Other themes, like Sinatra, have that typography option.

Is there a way to change default fonts in the twenty-twenty-one theme or do I need to switch to a different theme?

Thanks.

The page I need help with: [log in to see the link]