Question

what is the use of spanning cells in table. (HTML)

Answer 1

<table>
  <tr>
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
  <tr>
    <td>February</td>
    <td>$80</td>
  </tr>
  <tr>
    <td colspan="2">Sum: $180</td>
  </tr>
</table>

Answer 2

Span simply means space
In HTML, for the purpose of designing a table, we use 'Colspan' and 'Rowspan'

Colspan: Colspan value defines the no. of columns occupied by that particular cell.
Eg:
<TH Colspan="6"> means the cell span over 6 columns.

Rowspan: It specifies the no. of rows to be spanned by a cell.
Default value:1
Eg: <TD Rowspan="6"> makes the cell span over 6 rows.

Hope this will help you ☺️