18F/web-design-standards

<div class="usa-overlay"></div>
<header class="usa-header {{ modifier }}">
  {% include "@components/usa-header/src/_includes/usa-navbar.twig" %}
  <nav aria-label="{{ nav.aria_label }}" class="usa-nav">
    <div class="usa-nav__inner">
      {% include "@components/usa-nav/src/usa-nav__primary/usa-nav__primary.twig" %}
      {% include "@components/usa-nav/src/usa-nav__secondary/usa-nav__secondary.twig" with navSecondaryContent %}
    </div>
  </nav>
</header>