Form (base)

 <form id="modulo">
    <table>
      <tr>
        <th>Quantità</th>

        <th>Descrizione</th>

        <th>Costo unitario</th>

        <th>Totale</th>
      </tr>

      <tr>
        <td><input maxLength="2" size="2" value="0" id="art1" /></td>

        <td>Logitech Mouse M100GRAY</td>

        <td>7 €</td>

        <td><input value="0" name="totale1" /></td>
      </tr>

      <tr>
        <td><input maxLength="2" size="2" value="0" id="art2" /></td>

        <td>Kraun tastiera 5q ice-cream</td>

        <td>10.50 €</td>

        <td><input value="0" name="totale2" /></td>
      </tr>

      <tr>
        <td><input maxLength="2" size="2" value="0" id="art3" /></td>

        <td>HP stampante deskjet 1510 AiO</td>

        <td>44 €</td>

        <td><input value="0" name="totale3" /></td>
      </tr>

      <tr>
        <td><input maxLength="2" size="2" value="0" id="art4" /></td>

        <td>Tp-Link Wireless Router</td>

        <td>44.10 €</td>

        <td><input value="0" name="totale4" /></td>
      </tr>

      <tr>
        <th colSpan="3">Totale Ordine</th>

        <td><input value="0" id="totale" /></td>
      </tr>
    </table>
  </form>