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<!DOCTYPE html> <html> <title>W3.CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="/lib/w3.css"> <body class="w3-container"> <p>Default:</p> <div class="w3-topnav w3-green"> <a href="#">Home</a> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> <a href="#">Link 4</a> </div> <p>w3-large</p> <div class="w3-topnav w3-large w3-green"> <a href="#">Home</a> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> <a href="#">Link 4</a> </div> <p>W3-xlarge:</p> <div class="w3-topnav w3-xlarge w3-green"> <a href="#">Home</a> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> <a href="#">Link 4</a> </div> </body> </html>