<table>
    <caption>Example Colgroup</caption>
    <colgroup>
    <col class="col1" />
    <col class="col2" />
    <col class="col3" />
    <col class="col4" />
    <col class="col5" />
    <col class="col6" />
    <col class="col7" />
    <col class="col8" />
    <col class="col9" />
    <col class="col10" />
    </colgroup>
    <tr>
        <th>red</th>
        <th>blue</th>
        <th>green</th>
        <th>orange</th>
        <th>red</th>
        <th>blue</th>
        <th>green</th>
        <th>orange</th>
        <th>red</th>
        <th>blue</th>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
    </tr>
</table>