Ask HN: (Solved!) Using CSS to make HN comments only 8 to 10 words wide?

I was idly wondering if anyone had applied a custom style to Hacker News that forced comments to be 8 to 10 words wide?

Something like this:

    Comment by Blah:
    The best is to use a template literal.
    
        Reply by Foo:
        I disagree, you should use str.replace and ignore
        template literals.
    
            Reply by Blah:
            Respectfully, you are an idiot. Ignoring template literals
            for a horrible regex has no place in JavaScript.
    
        Reply by wattle:
        I agree, and here's a tangent that doesn't have
        much to do with the topic.

The optimum width of a paragraph is 50 to 80 characters with some disagreement on the max width. Which is about 8 to 10 words, or 30 to 50 em according to this question on stackoverflow: https://ux.stackexchange.com/questions/108801/what-is-the-best-number-of-paragraph-width-for-readability

Is it possible to style HN like that?