title: Struggling to increase & reduce font size on responsive email campaign
body: <p>I am creating some responsive email templates using HTML / CSS and am having trouble controlling how the font appears in the mobile view. </p>
  
  <p>I need to increase the font size of the text body, and reduce the font size of the header &amp; footer text. </p>
  
  <p>I have tried adding table classes, td classes and span classes but to no avail. </p>
  
  <p>Has anyone experienced similar problems and come up with a fix? </p>