I have created this table in my Qweb report and as you can see this table has borders. But how can I remove border for <tfoot element only? It should be bordered on <thead and <tbody. Do I need to do it with custom CSS somehow?
<table style="border-color:grey;" class="table-bordered table-sm o_main_table" name="moves_table">
<thead>
<tr>
<th>No</th>
<th>Description</th>
<th class="text-center">Code</th>
<th class="text-right">Units</th>
<th class="text-right">Quantity</th>
<th class="text-right">Package quantity</th>
<th class="text-right">Net weight (kg)</th>
<th class="text-right">Weight incl. packaging</th>
<th class="text-right">Type of package</th>
</tr>
</thead>
<tbody class="invoice_tbody">
<tr t-foreach="o.move_ids_without_package" t-as="l">
<td class="text-center">
<span t-esc="l_index + 1" />
</td>
<td>
<span t-field="l.name"/>
</td>
<td>
<span t-field="l.product_id.default_code"/>
</td>
<td class="text-right">
<span t-field="l.product_uom.name"/>
</td>
<td class="text-right">
<span t-esc="'%.2f'%(l.product_uom_qty)"/>
</td>
<td class="text-right">
<span t-esc="'%.2f'%(l.product_uom_qty)"/>
</td>
<td class="text-right">
<span t-esc="'%.2f'%(l.product_uom_qty)"/>
</td>
<td class="text-right">
<span t-esc="'%.2f'%(l.product_uom_qty)"/>
</td>
<td class="text-right">
<span t-esc="'%.2f'%(l.product_uom_qty)"/>
</td>
</tr>
</tbody>
<tfoot>
<tr>
<td></td>
<td></td>
<td></td>
<td class="text-right"><span><strong>Total amount</strong></span></td>
<td class="text-right"><span t-esc="sum(o.move_ids_without_package.mapped('product_uom_qty'))"/></td>
<td class="text-right"><span t-esc="sum(o.move_ids_without_package.mapped('product_uom_qty'))"/></td>
<td class="text-right"><span t-esc="sum(o.move_ids_without_package.mapped('product_uom_qty'))"/></td>
<td class="text-right"><span t-esc="sum(o.move_ids_without_package.mapped('product_uom_qty'))"/></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td class="text-right"><span><strong>Total Weight</strong></span></td>
<td></td>
<td></td>
<td></td>
<td class="text-right"><span t-esc="sum(o.move_ids_without_package.mapped('product_uom_qty'))"/></td>
</tr>
</tfoot>
</table>