<table id="table1">
                    <thead>
                        <tr>
                            <th colspan="1">Line 1, Header 1</th>
                            <th colspan="1">Line 1, Header 2</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td>Line 2, Cell 1</td>
                            <td>Line 2, Cell 2</td>
                        </tr>
                        <tr>
                            <td>Line 3, Cell 1</td>
                            <td>Line 3, Cell 2</td>
                        </tr>
                    </tbody>
                </table>

                <table id="table2">
                    <thead>
                        <tr>
                            <th colspan="2">Header</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td>1</td>
                            <td rowspan="2">Merging two lines</td>
                        </tr>
                        <tr>
                            <td>2</td>
                        </tr>
                        <tr>
                            <td colspan="2">Fusionning two cells</td>
                        </tr>
                    </tbody>
                </table>

                <table id="table3">
                    <tr>
                        <th colspan="2" id="table3-txt">One cell</th>
                    </tr>

                </table>