category.swig

      {# Show year #}
      {% set year %}
      {% set post.year = date(post.date, 'YYYY') %}

      {% if post.year !== year %}
        {% set year = post.year %}
        <div class="collection-title">
          <h2 class="archive-year motion-element" id="archive-year-{{ year }}">{{ year }}</h2>
        </div>
      {% endif %}
      {# endshow #}

      {{ post_template.render(post) }}
    {% endfor %}

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.（省略好多行）
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{% block script_extra %}
  {% if theme.use_motion %}
    <script type="text/javascript" id="motion.page.archive">
      $('.archive-year').velocity('transition.slideLeftIn');
    </script>
  {% endif %}
{% endblock %}