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HTML: Combining cells inside rows and columns

Tables often need to merge rows or columns. It helps to combine different information. For example, if there is no product in the stock table, there is no point in constantly duplicating information - it can be merged, and you can write that the product is out of stock:

Item Price Amount
Tea Out of stock

With HTML, you can combine cells in columns or rows by using the special attributes colspan and rowspan. Their values are the number of cells to be merged with the current one, either to the right (for colspan) or down (for rowspan) Counting for the number of cells starts from the current cell that the property has been applied to. For example, if the value is colspan="2", the current cell will be merged with the neighboring one.

The layout for the example above, without combining cells, is as follows:

<table>
  <thead>
    <tr>
      <th>Item</th>
      <th>Price</th>
      <th>Amount</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>Tea</td>
      <td>Out of stock</td> <!-- the cell we want to combine -->
      <td></td>
    </tr>
  </tbody>
</table>

In order to merge cells, you need to do two things:
1. Once you've chosen a cell to be merged and added the tags, add the colspan attribute with a value equal to the number of cells to be merged to the right
2. Remove unnecessary cells from the row

<table>
  <thead>
    <tr>
      <th>Item</th>
      <th>Price</th>
      <th>Amount</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>Tea</td>
      <td colspan="2">Out of stock</td>
    </tr>
  </tbody>
</table>

The rowspan attribute is used to combine cells vertically. The algorithm is the same as the with horizontal merging. The only difference is that you have to delete cells in neighboring rows:

<table>
  <thead>
    <tr>
      <th>Employee</th>
      <th>Salary</th>
      <th>Bonus</th>
      <th>Manager</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>Alex Primadonin</td>
      <td>750$</td>
      <td>63$</td>
      <td rowspan="2">Cody Hexly</td>
    </tr>
    <tr>
      <td>Eddie Vainy</td>
      <td>1200$</td>
      <td>0</td>
    </tr>
  </tbody>
</table>

In this example, there are two employees interacting with one manager. You can specify it twice, but it's clearer if you merge the cells vertically. To do this, the attribute rowspan="2" was added, and in the second row the fourth cell was removed, because its place will be taken by the cell above.

Employee Salary Bonus Manager
Alex Primadonin 750$ 63$ Cody Hexly
Eddie Vainy 1200$ 0

Instructions

Create a table with two rows and three columns. In the second row, combine the first two cells using the attributes you learned about. The first row should be the header of the table

The exercise doesn't pass checking. What to do? 😶

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In my environment the code works, but not here 🤨

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Tips

  • The number of cells in each row of the table must be the same after merging. It's important to distinguish between the number of <td> tags and the total number of cells. For example, using the colspan="2" attribute on a cell you will get two cells but visually combined in one. For this reason, it's necessary to remove one physical cell from the markup to compensate

  • If the colspan attribute is used, then the cells in the same line will be removed from the HTML code. If the rowspan attribute is used, the cells in the rows below are deleted


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