pinafore/routes/settings/_components/SettingsNavItem.html

<a class='settings-nav-item {{getCurrentClass(page, name)}}' aria-label='{{getAriaLabel(page, name, label)}}' href='{{href}}'>
  {{label}}
</a>
<style>
  a.settings-nav-item {
    font-size: 1.2em;
  }

  a.settings-nav-item.selected {
    font-weight: 600;
  }
</style>
<script>
  export default {
    helpers: {
      getCurrentClass(page, name) {
        return page === name  ? "selected" : ""
      },
      getAriaLabel(page, name, label) {
        return page === name ? "Current page" : label
      }
    }
  }
</script>