h1.titlepict {
	position: relative;
	width: 600px; height: 400px;
	background-image: image-set(url(bb4.avif)  type("image/avif"), url(bb4.webp)  type("image/webp"), url(bb4.jpg)  type("image/jpeg"));
}

h1.titlepict span {
	position:absolute;
	display: block;
	top: 5px; left: 10px;
	width: 400px; height: 50px;
	background-image: image-set(url(name-prelude.webp) type("image/webp"), url(name-prelude.png) type("image/png"));
	text-indent: -9999px;
}