<script src="//unpkg.com/@fylgja/alpinejs-dialog" defer></script>
<script src="//unpkg.com/alpinejs" defer></script>
 
<div x-data="{ open: false }">
    <button @click="open = true">Expand</button>
 
    <dialog x-show="open" x-htmldialog="open = false">
      Content...
    </dialog>
</div>