Edit in JSFiddle

<ol>
  <li>Erstes Listen-Element</li>
  <li>Zweite Zeile – gerade</li>
  <li>Dritte Zeile - ungerade</li>
  <li>Vierte Zeile - gerade</li>
  <li>Letztes Listen-Element</li>
</ol>
<table>
  <tr>
    <td>Erste Tabellen-Zeile</td>
    <td>Zelle 2</td>
  </tr>
  <tr>
    <td>Zweite Zeile – gerade</td>
    <td>Zelle 2</td>
  </tr>
  <tr>
    <td>Dritte Zeile - ungerade</td>
    <td>Zelle 2</td>
  </tr>
  <tr>
    <td>Vierte Zeile - gerade</td>
    <td>Zelle 2</td>
  </tr>
  <tr>
    <td>Letzte Tabellen-Zeile</td>
    <td>Zelle 2</td>
  </tr>
</table>
li:nth-child(1) {
  color: #009900;
}

li:nth-last-child(1) {
  color: #990000;
}

li:nth-of-type(3) {
  font-weight: bold;
}

li:nth-last-of-type(4) {
  text-decoration: underline;
}

tr:nth-child(even) {
  background-color: #f9f9f9;
}

tr:nth-child(odd) {
  background-color: #cccccc;
}