The background-attachment
property specifies whether the background image should scroll or be fixed (will not scroll with the rest of the page):
Specify that the background image should be fixed:/p>
<!DOCTYPE html>
<html>
<head>
<style>
body {
background-image: url("img_tree.png");
background-repeat: no-repeat;
background-position: right top;
margin-right: 200px;
background-attachment: fixed;
}
</style>
</head>
<body>
<h1>The background-attachment Property</h1>
<p>The background-attachment property specifies whether the background image should
scroll or be fixed (will not scroll with the rest of the page).</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
<p>The background-image is fixed. Try to scroll down the page.</p>
</body>
</html>