CSS Background-attachment scroll

<!DOCTYPE html>
<html>
<head>
<style>
body {
background-image: url("https://nielitbhu.com/image.jpg");
background-repeat: no-repeat;
background-attachment: scroll;

}
</style>
</head>
<body>
<h1>Example of background-attachment scroll Property;</h1>
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</body>
</html>