// To showcase the demo of dark theme. Copy paste :)
<script type="text/javascript">
  document.addEventListener("DOMContentLoaded", () => {
    const toggleDark = document.getElementById('toggleDark')
    toggleDark.addEventListener('click', function() {
      if(document.documentElement.classList.includes('dark')) {
        document.documentElement.classList.remove('dark')
      }
      else {
        document.documentElement.classList.add('dark')
      }
      alert("click!")
    });
  });
</script>