svelte/test/js/samples/css-shadow-dom-keyframes/input.html

<div>fades in</div>

<style>
	div {
		animation: foo 1s;
	}

	@keyframes foo {
		0% { opacity: 0; }
		100% { opacity: 1; }
	}
</style>

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