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[Stephen]

It doesn’t require any knowledge of HTML. If you’ve never customized the CSS on your site before it’s very simple to do. Check the ‘where do I add my CSS’ section of the below:

Make CSS changes on Your Site

Want to make some CSS changes on your Discourse site but not sure where to start? You’ve come to the right place! You only need to read this topic if you’re very new to CSS. If you already know how to write and add CSS to your Discourse site, then you will most likely not need to read this topic. We’ll cover a few subjects. We’ll start with a brief introduction of what CSS is and some terms that you need to know. We will then move on to how you can add CSS to your Discourse site. Final…

And paste in the snippet from the post you linked.