title: Superscript in markdown (Github flavored)?
body: <p>Following this <a href="https://web.archive.org/web/20171125132707/http://blog.jochmann.me:80/post/24465337253/tumblr-markdown-footnote-superscript-css" rel="noreferrer">lead</a>, I tried this in a Github README.md:</p>
  
  <pre><code>&lt;span style="vertical-align: baseline; position: relative;top: -0.5em;&gt;text in superscript&lt;/span&gt;
  </code></pre>
  
  <p>Does not work, the text appears as normal. Help?</p>