Basic header with sign out link

HTML

<header class="dwp-header">
  <div class="dwp-header__content govuk-width-container">
    <div class="dwp-header__service-name dwp-header__service-name--with-action">
      <a href="#" class="dwp-header__link">Service name</a>
    </div>
    <div class="dwp-header__service-action">
      <a href="#" class="dwp-header__link">Sign out</a>
    </div>
  </div>
</header>