title: JavaFx TableColumn width in css using em unit
body: <p>When setting the column width in CSS using <code>em</code> units as below and running the application, I cannot see the horizontal table view scroll bar and also cannot resize the column at run time from column header.</p>
  <pre><code>.table-column{
     -fx-pref-width: 10em;
  }
  </code></pre>