How to customize the text in an embedded post?

Thanks for the reply! I’m using the JavaScript embed. For example, I have this page:

Which contains this embed code:

<script type="text/javascript">
DiscourseEmbed = { discourseUrl: location.protocol 
	+ '//forum.happycoding.io/',
	discourseEmbedUrl: location.protocol + '//happycoding.io/tutorials/javascript/react-css' };
	
(function() {
	var d = document.createElement('script'); d.type = 'text/javascript'; d.async = true;
	d.src = DiscourseEmbed.discourseUrl + 'javascripts/embed.js';
	(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(d);
})();
</script>

That creates this post on my Discourse:

And if you click that, you’ll see that the post contains the full text of the original page.