Tryit Editor v2.6

Edit This Code:
<!DOCTYPE html>
<html>
<head>
  <title>Styling the article element</title>
  <script>document.createElement("myHero")</script>
  <style>
  myHero {
      display:block;
      background-color:#ddd;
      padding: 50px;
      font-size: 30px;
  }  
  </style>
</head>
<body>

<h1>My First Heading</h1>

<p>My first paragraph.</p>

<myHero>My First Hero</myHero>

</body>

</html>