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<!DOCTYPE html> <html> <body> <h1>HTML Style Object</h1> <h2>The border Property</h2> <div id="myDiv" style="border:thick solid blue;">This is myDiv.</div> <br> <button type="button" onclick="myFunction()">Change border</button> <script> function myFunction() { document.getElementById("myDiv").style.border = "thin dotted red"; } </script> </body> </html>
