Denis Žoljom

<p>The plugin will provide a collapsible HTML <code><details></code> block with a <code><summary></code> element that will be shown when the element is collapsed. Inside the details you can put as many paragraphs or code blocks as you want.</p>
<h4>Requirements</h4>
<ul>
<li>PHP 5.6 or greater (recommended: PHP 7 or greater)</li>
<li>WordPress 5.0 or above (because of the Gutenberg editor)</li>
</ul>


Details Summary Block

This plugin provides a simple block for the `` HTML element.

<p>Adds fallback support for the HTML5 <a href="http://html5doctor.com/the-details-and-summary-elements/" rel="nofollow ugc"><details> and <summary> elements</a> in browsers that don’t support them using <a href="http://mathiasbynens.be/notes/html5-details-jquery" rel="nofollow ugc">Mathias Bynens’ <details>/<summary> jQuery plugin.</a></p>
<p>Once the plugin is activated on your site, the following HTML should work in all modern browsers, even if they don’t natively support the <details> and <summary> elements:</p>
<pre><code><details>
  <summary>Click for more info...</summary>
  This is where you'd add the additional content that won't be seen until the "summary" is clicked.
</details>
</code></pre>


HTML5 Details Polyfill

Adds fallback support for the HTML5 <details> and <summary> elements in browsers that don't support them.

Details Summary Block vs HTML5 Details Polyfill