title: Advanced positioning of Wijmo Dialog
body: <p>I am trying to position a Wijmo dialog in a central position,  but I have an horizontal splitter in the middle of my page and this covers a part of my dialog.</p>
  
  <p>I am looking therefore to position the widget in the top center, let's say on the upper central part of the page. </p>
  
  <p>For example I would like to do the following:</p>
  
  <ul>
  <li>Width: 40% </li>
  <li>Margin-left : 30%</li>
  <li>Margin-right: 30%</li>
  <li>Height: 300px</li>
  <li>Margin top: 20% </li>
  </ul>
  
  <p>How this is done with Wijmo? Is there any library which makes this task easier?</p>