Ghost Markdown Shortcut for Footnote

Hi David, I tried inserted this in the Code Injection’s Site Header but had no luck.

Apologies, does it need to be inserted within the footnotes code snippet in the post.hbs file instead? Happy New Year btw.

<style>
    .footnote-ref, {color: #a00000}
.footnote-backref {color: #a00000︎
    }
</style>