To use the library just add styles and JavaScript
<link rel="stylesheet" href="...minimal-dialog.min.css">
<script src="...minimal-dialog.min.js"></script>
Then bind trigger by adding data-dialog attribute with value of an id of a dialog.
<button data-dialog="simple-dialog">Open dialog</button>
And add dialog itself to a document body
<dialog id="simple-dialog">
<p>Simple modal content</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore
magna aliqua.</p>
<p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
<p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.</p>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</p>
<button data-dialog-close>Close</button>
</dialog>
The <button data-dialog-close>Close</button> is optional, but you can bind any close trigger by adding data-dialog-close attribute to an element.