Create html table row without tr tag

Solution 1:

I wonder whether something like this might work for you:

tbody, thead {
  display: contents;
}
tr {
  display: table-row-group;
}
td.row {
  display: table-row;
  background: rgb(200 197 255 / 63%);
}
td.row div {
  display: table-cell;
}

    <table>
      <tbody>
        <tr style="text-align: center; background: rgba(252,212,212,0.63);">
          <td class="text-center" style="font-weight: bold;">AAA</td>
          <td class="text-center">T1</td>
          <td class="text-center">300 cm</td>
          <td class="text-center">60% poliestere, 40% viscosa</td>
          <td class="text-center">Tenda piombata</td>
          <td class="text-center">50 € (25+ mtl)<br /></td>
          <td class="text-center">75 €<br /></td>
        </tr>

        <tr style="text-align: center; background: rgba(252,212,212,0.63);">
          <td class="text-center" style="font-weight: bold;">BBB</td>
          <td class="text-center">T1</td>
          <td class="text-center">100 cm</td>
          <td class="text-center">60% poliestere, 30% viscosa, 10% cotone</td>
          <td class="text-center">Tenda piombata</td>
          <td class="text-center">50 € (25+ mtl)<br /></td>
          <td class="text-center">75 €<br /></td>
          <td class="row">
            <div class="text-center">2649</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
          </td>
          <td class="row">
            <div class="text-center">8765</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
          </td>
        </tr>
        
        <tr style="text-align: center; background: rgba(252,212,212,0.63);">
          <td class="text-center" style="font-weight: bold;">CCC</td>
          <td class="text-center">T1</td>
          <td class="text-center">800 cm</td>
          <td class="text-center">60% poliestere, 30% viscosa, 10% cotone</td>
          <td class="text-center">Tenda piombata</td>
          <td class="text-center">50 € (25+ mtl)<br /></td>
          <td class="text-center">75 €<br /></td>
          <td class="row">
            <div class="text-center">4598</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
            <div class="text-center">//</div>
          </td>
        </tr>
      </tbody>

    </table>

See this idea with table sorter logic at https://jsfiddle.net/Lb9ye6ta/

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