CSS to make table 100% of max-width

Question

Given the following for an email template:

<style>
  @import url("http://fonts.googleapis.com/css?family=Open Sans");
</style>

<div style="width:100%; background:#F2F2F2">
  <table style="padding: 25px; margin: 0 auto; font-family:'Open Sans', 'Helvetica', 'Arial';">
    <tr align="center" style="margin: 0; padding: 0;">
      <td>
        <table style="border-style:solid; border-width:2px; border-color: #c3d2d9;" cellspacing="0">
          <tr style="background-color: white;">
            <td style="width: 700px; padding: 10px 15px 10px 15px; color: #000000;">
              <p>Some content here</p>
              <span style="font-weight: bold;">My Signature</span><br/>
              My Title<br/>
              My Company<br/>
            </td>
          </tr>
        </table>
      </td>
    </tr>
  </table>
</div>

The table will be exactly 700px wide is what is needed. However, because its entirely fixed width, it can't resize on devices with less than 700px width. But if I modify the td element to this:

<td style="max-width: 700px; width: 90%; padding: 10px 15px 10px 15px; color: #000000;">
   <p>Some content here</p>
   <span style="font-weight: bold;">My Signature</span><br/>
   My Title<br/>
   My Company<br/>
</td>

Then the table is only ~100px wide.

How would I reorder the CSS to make it so that the table is 700px but resizes as the viewport grows smaller?

Answer 1

Like this

demo

css

table{
    width:100%;
}