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<!DOCTYPE html> <html lang="en-US"> <head> <style> div{ padding: 10px; margin-bottom: 10px; outline-style: dashed; } </style> </head> <body> <h1>CSS outline-color Property</h1> <div> This is div container. </div> <button onclick="myFunction()">Click Me</button> <script> var x = document.getElementsByTagName("div")[0]; function myFunction(){ x.style.outlineColor = "red"; } </script> <p><strong>Note</strong>: Click on the button to change the 'outline-color' from black (default) to red.</p> </body> </html>
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