这一页从桌上掉下去了。

<main class="f-empty-page">
  <div class="f-empty">
    <div>
      <div class="f-empty__cat" aria-hidden="true"></div>
      <p class="f-empty__code">404</p>
      <h1>This page fell off the table.</h1>
      <p>Dudu knocked it off.</p>
      <a class="f-btn f-btn--primary" href="/">Back to home</a>
    </div>
  </div>
</main>