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<!DOCTYPE html>
<html>
<body>
<h3>A demonstration of how to access a HEADER element</h3>
<article>
  <header id="myHeader">
  <h3>Edge Web Browsers</h3>
  </header>
  <p>Edge was first released for Windows 10 and Xbox One in 2015.</p>
</article>
<p>Click the button to set the color of the header element to red.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
  const x = document.getElementById("myHeader");
  x.style.color = "red";
}
</script>
</body>
</html>