Let's say we want to build something like this:
<wp-meetup-component
title="First Web Component"
description="This is my first web component"
>
<p>And this is a child tag</p>
</wp-meetup-component>
Default description.
And this is a child tag
And this is a child tag
And this is a child tag
And this is a child tag
Source: https://github.com/DBozhinovski/neat-html-tricks-demo/blob/master/src/pages/web-components-full.html