Final answer:
To center-align the Month heading in cell A3, use text-align: center. To indent the Total text in cell A8, use text-indent: 1em. To set the angle for the text in cell B3 to 30 degrees, use transform: rotate(30deg).
Step-by-step explanation:
To center-align the Month heading in cell A3, you can use the command text-align: center;. For example: <td>Month</td>. To indent the Total text in cell A8, you can use the command text-indent: 1em;. For example: <td>Total</td>. Lastly, to set the angle for the text in cell B3 to 30 degrees, you can use the command transform: rotate(30deg);. For example: <td>Text</td>.