<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>
<div class="w3-container w3-red w3-cell">
<p>Hello W3.CSS Layout.</p>
</div>
<div class="w3-container w3-green w3-cell">
<p>Hello W3.CSS Layout. Hello W3.CSS Layout. Hello W3.CSS Layout.</p>
</div>
</body>
</html>