html, body {
	height: 100%;
}
body {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

/* you can expose style controls via 'parts' */
my-element::part(intro){
	font-size: 2.5em;
}
my-element::part(count){
	color: red;
}