title: What does display: table-column do?
body: <p>According to <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/display" rel="noreferrer">mdn</a> <code>display: table-column</code> should </p>
  
  <blockquote>
    <p>behave like   HTML elements.</p>
  </blockquote>
  
  <p>But as far as I know, <code>&lt;col&gt;</code> elements have no display mode, they're actually just a rough edge of html which defines style in markup. So what in the world is <code>table-column</code> in css supposed to do?</p>