https://automaticcss.com/

Here's why Automatic.css (ACSS) is a game changer for web designers and developers who use WordPress page builders.... Anything on your ACSS powered website that contains text, whether it's a heading, paragraph, list, form field, or anything else, follows a perfect mathematical scale in hierarchy through 12 different size options, all of which are automatically & perfectly mobile responsive. Best of all, the entire system is under your command from the Automatic.css dashboard.