title: I can't center multiple headers while also finding them in the table of contents
body: <p>I am trying to center multiple different headers but I cant center more than one without creating subheaders</p>
  
  <pre><code>&lt;center&gt;
  # **Poster**
  &lt;/center&gt;
  
  ## Hello
  
  &lt;center&gt;
  # Penny
  &lt;/center&gt;
  
  &lt;center&gt;
  ## **Plan**
  &lt;/center&gt;
  </code></pre>
  
  <p>Everything shows up in the table of contents right now but only Poster and Plan are centered. I had to put 2 # in front of plan to make it centered.</p>