Can't get style.css to load

I have a working plugin and I’m trying to add some css, but I cannot get any CSS to work or even show up in the developer console.

Right now, I have a style.css saved in the root of my plugin directory. It only contains one style just to prove whether it’s working:

body {
    color: red !important;

Is there something I’m supposed to do besides just adding style.css to the plugin directory? I have reloaded the plugin, disabled it and re-added it, and restarted obsidian. I’m not even sure how to troubleshoot at this point.

I think the correct naming is styles.css (with an “s”).

Thank you.