How to change the font style/size of timedate stamp in markdown card

Configuration Frontend
1

Presuming the below markdown card and respective code, how do I change the timedate timestamp font size/style ONLY?

Screenshot 08-17-2023 at 03.12.50 PM
Screenshot 08-17-2023 at 03.12.50 PM838×147 3.82 KB 

type: markdown
style: |
  ha-card {
    font-size: 18px;
  }
content: |
  <div class="tg-wrap">
    <table width=100%>
      <tbody>
        <tr>
          <td><ha-icon icon="mdi:bell"></ha-icon> ‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎{{ states('input_text.notification_1') }}</td>
          <td style="text-align:right;">{{ (states('input_datetime.notification_1_timestamp') | as_datetime).strftime('%I:%M:%S%p %m/%d/%y') }}</td>
        </tr>
        <tr>
          <td><ha-icon icon="mdi:bell"></ha-icon> ‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎{{ states('input_text.notification_2') }}</td>
          <td style="text-align:right;">{{ (states('input_datetime.notification_2_timestamp') | as_datetime).strftime('%I:%M:%S%p %m/%d/%y') }}</td>
        </tr>
        <tr>
          <td><ha-icon icon="mdi:bell"></ha-icon> ‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎{{ states('input_text.notification_3') }}</td>
          <td style="text-align:right;">{{ (states('input_datetime.notification_3_timestamp') | as_datetime).strftime('%I:%M:%S%p %m/%d/%y') }}</td>
        </tr>
      </tbody>
    </table>
  </div>
2

btw, are you sure this style is working?

As for styling:
may be done by card-mod