ocument.getElementsByClassName('card-toggle');
    for (let i = 0; i < cardToggles.length; i++) {
      cardToggles[i].addEventListener('click', e => {
        e.currentTarget.parentElement.parentElement.childNodes[3].classList.toggle('is-hidden');
      });
    }
  });
</script>

<style>
  body {
    height: 100vh;
  }
  .error-box {
    margin: 1.25rem auto;
    max-width: 600px;
  }
  .status-code {
    font-size: 12rem;
    font-weight: 600;
  }
  #more-info.card {
    border: 1px solid #f0f0f0;
  }
  f