Untitled

<!DOCTYPE html>
<html>
   <head>
      <title>Router</title>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
   </head>
   <body>
      <iframe src="pages/home.html"></iframe>
   </body>
</html>

<!DOCTYPE html>
<html>
   <head>
      <title>Home</title>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
   </head>
   <body>
      <ul>
         <li><a href="about.html">About</a></li>
      </ul>
   </body>
</html>

<!DOCTYPE html>
<html>
   <head>
      <title>About</title>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
   </head>
   <body>
      <ul>
         <li><a href="home.html">Home</a></li>
      </ul>
   </body>
</html>