Éditeur Tryit de W3Schools

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../w3css/4/w3.css">
<body>

<div class="w3-container w3-blue">
  <h1>W3Schools Démonstration</h1> 
  <p>Redimensionnez cette page responsive !</p> 
</div>

<div class="w3-row-padding">
  <div class="w3-third">
    <h2>Londres</h2>
    <p>London est la ville capitale de l'Angleterre.</p>
    <p>It is the most populous city in the United Kingdom,
    with a metropolitan area of over 13 million inhabitants.</p>
  </div>

<div class="w3-third">
    <h2>Paris</h2>
    <p>Paris est la capitale de la France.</p> 
    <p>The Paris area is one of the largest population centers in Europe,
    with more than 12 million inhabitants.</p>
  </div>

<div class="w3-third">
    <h2>Tokyo</h2>
    <p>Tokyo est la capitale du Japon.</p>
    <p>It is the center of the Greater Tokyo Area,
    and the most populous metropolitan area in the world.</p>
  </div>
</div>

</body>

</html>