WSJT-X/doc/user_guide/en/docinfo.html

<style>
  html, body {
  font-size: 90%;
  }

  body {
  font-family: Arial, Helvetica, sans-serif;
  }

  h1, h2, h3, h4, h5, h6 {
  font-family: Georgia, "Times New Roman", Times, serif;
  }

  a:visited {
  color: purple;
  }
</style>