twitter_auth.html

<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
<link rel="stylesheet" href="https://ssl.gstatic.com/docs/script/css/add-ons.css">
<div style="margin-bottom:10px;">
  <div class="info">
    <p>To allow access to data from Twitter you need to authorize the connection. You can remove this authorization at
      anytime using your Twitter Appllication Settings <a href="https://twitter.com/settings/applications" target="_blank">https://twitter.com/settings/applications</a></p>
    <p><strong>Note</strong>: You only need to do this once for all your Google Drive documents that connect to Twitter using this service.</p>
  </div>
  <div style="text-align:center;">
    <a href='<?= url ?>' target='_blank' onclick='google.script.host.close();'><img src='https://g.twimg.com/dev/sites/default/files/images_documentation/sign-in-with-twitter-gray.png'/></a>
  </div>
</div>
</body>
</html>