<html lang="es">
<head>
<title>Baseball</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<meta http-equiv="X-UA-Compatible" content="ie=edge"/>
<link rel="stylesheet" type="text/css" href="css/tipos.css" rel="stylesheet"/>
</head>
<body>
<div class="contenedor">
<form action="">
<h2>Baseball</h2>
<div>
<input class="entrada" name="nombre" />
<input name="correo" />
<button type="submit">Enviar</button>
</div>
</form>
</div>
</body>
</html>
body {
background-image: url(imagenes/estadio.JPG);
background-size: 100vw 100vh;
background-attachment: fixed;
}