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<html><style>body { background: #f3f3f3 url('img_tree.png');}</style><body><h1>HTML Style Object</h1><h2>The backgroundRepeat Property</h2><button type="button" onclick="myFunction()">Set background image to no-repeat</button><script>function myFunction() { document.body.style.backgroundRepeat = "no-repeat";}</script></body></html>