index.php

<!DOCTYPE HTML>
<html lang="pl">
  <head>
	<meta charset="utf-8"/>
	<title>test</title>
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
  </head>

  <body style="BACKGROUND-COLOR: #c1c1c1">

<form action="wys.php" method="post">
		<input type="number" name="wartosc" />
		<input type="submit" value="wyslij" />
	</form>

</body>
</html>