セクション共通ヘッダー（タイトル・説明文）

{% comment %}
  Renders a header (title and description) that is usually the same accross sections

  Accepts:
  - class: {String} (Optional) An optional class (or classes) to apply to header element

  Usage:
  {% render 'section-header' %}
{% endcomment %}

{% if section.settings.header_title != blank or section.settings.header_description != blank %}
  <header class="section-header text-center {{ class }}">
    {% unless section.settings.header_title == blank %}
      <h2 class="title {{ section.settings.header_title_font_size }}">
        {{ section.settings.header_title }}
      </h2>
    {% endunless %}
    {% unless section.settings.header_description == blank %}
      <div class="description rte opacity-70 {{ section.settings.header_description_font_size }}">
        {{ section.settings.header_description }}
      </div>
    {% endunless %}
  </header>
{% endif %}