<!DOCTYPE html>
<html>
    <head>
        <title>Tabelle</title>
    </head>
    <body>
        <table>
            <caption>Umsatzentwicklung</caption><!--Tabellenüberschrift-->
            <thead> <!--Tabellenkopf-->
                <tr>
                    <th>Quartal</th>
                    <th>2018</th>
                    <th>2019</th>
                    <th>2020</th>
                </tr>
            </thead>
            <tbody><!--Tabellenkörper-->
                <tr>
                    <td>1</td>
                    <td>245</td>
                    <td>267</td>
                    <td>261</td>
                </tr>
                <tr>
                    <td>2</td>
                    <td>240</td>
                    <td>259</td>
                    <td>264</td>
                </tr>
                <tr>
                    <td>3</td>
                    <td>245</td>
                    <td>267</td>
                    <td>162</td>
                </tr>
            </tbody>
            <tfoot><!--Tabellenfuß-->
                <tr>
                    <td>summe</td>
                    <td>870</td>
                    <td>952</td>
                    <td>851</td>
                </tr>
            </tfoot>
        </table>
    </body>
</html>