Ask HN: CSS filter to set a max width of Hacker News?

I'm trying to use uBlock Origin's "My Filters" page to set the maximum width of comments pages, like this one: https://news.ycombinator.com/item?id=39692801 I've got a filter already that does the right thing for comments: news.ycombinator.com##.comment:style(max-width: 70ch !important; overflow: hidden !important;) And this is what I've tried for the headline/article text: news.ycombinator.com##table.hnmain:style(min-width: 500px !important; max-width: 500px !important;) but the headline/article text and the first comment box are still taking up most of the width of the screen: https://gist.github.com/aclarknexient/ca490d4f7a2bedb2c06965fe918e127a I'm not a CSS expert, and the Firefox devtools don't seem to update the table width for me, so I'm wondering if there's something script-ish going on. I would be very appreciative if anyone could help! EDIT: The dark mode is made via this filter: news.ycombinator.com##html:style(filter:invert(95%) hue-rotate(200deg); background: white;)