asp.net vertical align label in th code example

Example: how to align list to the centre in css

<div id="menu-centered">
     <ul>
          <li><a href="">My first item</a></li>
          <li><a href="">My second item</a></li>
          <li><a href="">My third item</a></li>
          <li><a href="">My fourth item</a></li>
          <li><a href="">My fifth item</a></li>
     </ul>
</div>