​x
 
<!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>
​