<div class="tabs">
  <ul>
    <li {% if active == "user" %}class="is-active"{% endif %}>
      <a href="/accounts/users/">用户</a>
    </li>
    <li {% if active == "group" %}class="is-active"{% endif %}>
      <a href="/accounts/groups/">分组</a>
    </li>
  </ul>
</div>
