<!DOCTYPE html>
<html lang="es">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width">
<title>Selector *</title>
<style>
* {
/* Texto centrado. */
text-align: center;
}
</style>
</head>
<body>
<h1>Selector *</h1>
<p>Hola.</p>
</body>
</html>