no chevrons on class="navigate-right"

[Herbert Betz]

I only use ratchet.css, not ratchet.js (version 2.0.2). This was suggested in the cordova beginners tutorial (https://ccoenraets.github.io/cordova-tutorial/index.html).
Now it shows chevrons only when I code:

                  <li class="table-view-cell">
                    <a class="navigate-right">
                        <span class="icon icon-right-nav pull-right"></span>
                        Item1
                    </a>
                  </li>
 
but not, when I code:
 
                <li class="table-view-cell">
                    <a class="navigate-right">
                        Item2
                    </a>
                  </li>

But it should show without the icon code, as suggested by this lines in ratchet.css:

.navigate-right:after,
.push-right:after {
  right: 15px;
  content: '\e826';
}

Any help?