Center Button and Dropdown

Can anyone tell me how to add code to center this button? Also center the dropdown box?

So far I have either written code incorrectly or placed it incorrectly.

Thank you so much!

<strong><a href="https://mkt.com/fybalance">Order Online</a></strong>

<h3 style="text-align: center;">Order Sauna Therapy System with PayPal:</h3>
</form><form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top" data-myki-checked-cc="2">
<table border="0" align="center">
<tbody>
<tr>
<td style="text-align: center;"><input name="on0" type="hidden" value="Sauna Options" />Sauna Options</td>

• This topic was modified 7 years, 12 months ago by Steven Stern (sterndata).

The page I need help with: [log in to see the link]