gistfile1.txt

<style>

.message-content { max-width: 600px; }
.message-content div { padding-bottom: 10px; }
.message-content img { max-width: 100%; }

</style>
<div class="message-content">
{{ message_content }}
<br>
<br>
<small>
  {{ unsubscribe_link }} | {{ address }}
  <br>
</small>
</div>