18F/web-design-standards

<div class="usa-overlay"></div>
<header class="usa-header usa-header--basic {{ modifier }}">
  <div class="usa-nav-container">
    {% include "@components/usa-header/src/_includes/usa-navbar.twig" %}
    {% if nav %}
    <nav aria-label="{{ nav.aria_label }}" class="usa-nav">
      {% include "@components/usa-nav/src/usa-nav__primary/usa-nav__primary.twig" %}
      {% include "@components/usa-search/src/usa-search.twig" with search.settings %}
    </nav>
    {% endif %}
  </div>
</header>