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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"> <h2>Navigation Bar with Dropdown</h2> <p>Add a dropdown menu inside the navigation bar:</p> <ul class="w3-navbar w3-card-2 w3-light-grey"> <li><a href="#">Home</a></li> <li><a href="#">Link 1</a></li> <li class="w3-dropdown-hover"> <a href="#">Dropdown</a> <div class="w3-dropdown-content w3-white w3-card-4"> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> </div> </li> </ul> </body> </html>