CSS TABULATION

<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://www.w3schools.com/lib/w3.css">
<body>

<div class="w3-container">
<h2>Tabs</h2>
<p>Tabs are perfect for single page web applications, or for web pages capable of displaying different subjects. Click on the links below.</p>
</div>

<ul class="w3-navbar w3-black">
  <li><a href="#" onclick="openCity('London')">London</a></li>
  <li><a href="#" onclick="openCity('Paris')">Paris</a></li>
  <li><a href="#" onclick="openCity('Tokyo')">Tokyo</a></li>
</ul>

<div id="London" class="w3-container city">
  <h2>London</h2>
  <p>London is the capital city of England.</p>
</div>

<div id="Paris" class="w3-container city">
  <h2>Paris</h2>
  <p>Paris is the capital of France.</p>
</div>

<div id="Tokyo" class="w3-container city">
  <h2>Tokyo</h2>
  <p>Tokyo is the capital of Japan.</p>
</div>

<script>
openCity("London")
function openCity(cityName) {
    var i;
    var x = document.getElementsByClassName("city");
    for (i = 0; i < x.length; i++) {
       x[i].style.display = "none";
    }
    document.getElementById(cityName).style.display = "block";
}
</script>

</body>
</html>