Which path or file handles the custom template CSS?

[Moin]

Why don’t you add the CSS to your theme or a theme component, which you can then add to your theme?

Making custom CSS changes on your site

This guide explains how to make CSS changes on your Discourse site, including an introduction to CSS, where to add CSS in Discourse, and how to find the right selectors using browser inspection tools. Required user level: Administrator Summary This guide covers: A brief introduction to CSS and key concepts How to add CSS to your Discourse site using theme components Using browser inspection tools to find the right CSS selectors Understanding CSS basics C…