app/codein/content/html/codein/readonly/_group.html

<div class="block block-page">
  <div class="block-form-title">
    <span class="title">{{ title }}</span>
  </div>
  <div class="block-content model-readonly">
    {% for label, value in fields.iteritems %}
      <div class="readonly-row {% if forloop.counter|divisibleby:2 %}even{% else %}odd{% endif %}">
        <label>{{ label }}</label>
        <span class="readonly-row-content">{{ value }}</span>
      </div>
    {% endfor %}
  </div>
</div>