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<html><body style="background:#f3f3f3 url('w3css.gif') no-repeat fixed;"><h1>HTML Style Object</h1><h2>The backgroundAttachment Property</h2><p>The background attatchment is:</p><p id="demo"></p><p><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br>Some text to enable scrolling.<br><br><br><br></p><script>let back = document.body.style.backgroundAttachment;document.getElementById("demo").innerHTML = back</script></body></html>