<!-- Blend a background image and a background color specifying background-attachment: fixed -->
<!DOCTYPE HTML>
<html>
<head>
<style>
div {
background: #777777;
background-attachment: fixed ;
width: 200px;
height: 200px;
margin: 10px;
}
</style>
</head>
<body>
<div></div>
</body>
</html>