<!DOCTYPE html>
<html>
<head>
  <title>background-size: contain; not fixed, no-repeat on body</title>
  <style type="text/css">
body
{
  background-image: url(aqua-32x32.png);
  background-attachment: scroll;
  background-repeat: no-repeat;
  background-size: contain;
}
  </style>
</head>
<body>
</body>
</html>