svelte/test/custom-elements/samples/html-slots/main.html

<div>
	<slot>
		<p>default fallback content</p>
	</slot>

	<slot name='foo'>
		<p>foo fallback content</p>
	</slot>
</div>

<script>
	export default {
		tag: 'custom-element'
	};
</script>