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<html><body><h1>The Window Object</h1><h2 id="test" style="background-color:lightblue">The getComputedStyle() Method</h2><p>The computed background color for the test div is:</p><p id="demo"></p><script>const element = document.getElementById("test");const cssObj = window.getComputedStyle(element, null);let bgColor = cssObj.getPropertyValue("background-color");document.getElementById("demo").innerHTML = bgColor;</script></body></html>