revision:
The <td> tag defines a standard data cell in an HTML table. An HTML table has two kinds of cells: header cells, which contain header information (created with the "th" element), and data cells, which contain data (created with the "td" element). The text in "td" elements is regular and left-aligned by default. The text in "th" elements is bold and centered by default.
colspan ; value: number;
specifies the number of columns a cell should span.
header ; value: header_id;
specifies one or more header cells a cell is related to.
rowspan ; value: number;
sets the number of rows a cell should span.
<td> . . . </td>
| Cell A | Cell B |
| Cell C | Cell D |
<style>
table, th, td {border: 1px solid black;margin-left:4vw;}
</style>
<table>
<tr>
<td>Cell A</td>
<td>Cell B</td>
</tr>
<tr>
<td>Cell C</td>
<td>Cell D</td>
</tr>
</table>
| Month | Savings |
|---|---|
| January | $100 |
<table>
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td style="background-color:#FF0000">January</td>
<td style="background-color:#00FF00">$100</td>
</tr>
</table>