Untitled

<DOCTYPE !HTML>
<head>
<style>
body {
          background-color: <?php if($_POST['bgfarbe'] == "") { ?> #FFFFF <?php }else{ echo $_POST['bgfarbe'] } ?>;
}
</style>
</head>
<body>
<form name="hintergrundfarbe" action="index.php" method="post">
<input type="range" name="bgfarbe" min="0" max="255" value="0" step="1" style = "width:255px" />
<span id="range">0</span>
</form>
</body>