vartheme_bs4-8.x-6.10/templates/system/maintenance-page.html.twig

{#
/**
 * @file
 * Theme override to display a single Drupal page while offline.
 *
 * All available variables are mirrored in page.html.twig.
 * Some may be blank but they are provided for consistency.
 *
 * @see template_preprocess_maintenance_page()
 */
#}
{% set container = theme.settings.fluid_container ? 'container-fluid' : 'container' %}

<header class="page-header" role="banner">
  <div class="{{ container }}">
    <div class="row">
      {# Header #}
      {% set header_attributes = create_attribute() %}
      {%
        set header_classes = ['primary-column',
          'col-sm-8',
          'offset-sm-2',
          'text-center',
          'mt-5'
        ]
      %}
      <section{{ header_attributes.addClass(header_classes) }}>
      {# Have the default site logo #}
      {% if logo and not site_logo_ar %}
        <a href="{{ path('<front>') }}" title="{{ 'Home'|t }}" rel="home" class="site-logo">
          <img src="{{ logo }}" alt="{{ 'Home'|t }}" />
        </a>
      {% endif %}
      </section>
    </div>
  </div>
</header>

{# Main #}
<main role="main" class="main-container {{ container }}">
  <div class="row">
    {# Content #}
    {%
      set content_classes = [
        'col-sm-8',
        'offset-sm-2',
        'text-center',
        'mt-5'
      ]
    %}
    <section{{ content_attributes.addClass(content_classes) }}>
      <div class="card">
        <div class="card-header">
          {% if title %}
            <h1>{{ title }}</h1>
          {% endif %}
        </div>
        <div class="card-body">
          {# Highlighted #}
          {% if page.highlighted %}
            {% block highlighted %}
              <div class="highlighted">{{ page.highlighted }}</div>
            {% endblock %}
          {% endif %}

          {# Content #}
          {% block content %}
            <a id="main-content"></a>
            {{ page.content }}
          {% endblock %}
        </div>
      </div>
    </section>
  </div>
</main>

<footer class="footer {{ container }}" role="contentinfo">
  <div class="row">
    {# Footer #}
    {% set footer_attributes = create_attribute() %}
    {%
      set footer_classes = [
        'col-sm-12',
        'clearfix',
        'text-center',
        'mt-1',
      ]
    %}
    <section{{ footer_attributes.addClass(footer_classes) }}>
      <div class="footer-credits">
        <p>&copy; {{ "now"|date("Y") }} {{ site_name }}.  {{ 'All rights reserved.'|t }}</p>
      </div>
    </section>
  </div>
</footer>