Ejercicio3-3.html

<table border="1" align="center">
    <tr>
        <td>Celda 1</td>
        <td>Celda 2</td>
        <td>Celda 3</td>
        <td>Celda 4</td>
    </tr>
    <tr>
        <td colspan="2" rowspan="2">Esto son 2 filas y 2 cols</td>
        <td colspan="2">1 fila y 2 cols</td>
    </tr>
    <tr>
        <td>Celda 5</td>
        <td>Celda 6</td>
    </tr>
    <tr>
        <td rowspan="2" align="center">2 filas</td>
        <td>Celda 7</td>
        <td colspan="2" rowspan="2" align="center">2 filas y 2 cols</td>
    </tr>
    <tr>
        <td>Celda 8</td>
    </tr>
</table>