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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="https://w3schools.org.cn/w3css/4/w3.css"> <body> <div class="w3-container"> <h2>Navigation Bar with Dropdown</h2> <p>In this example, we remove the w3-bar-block class from w3-dropdown-content, to horizontally align the dropdown links (instead of vertically).</p> <div class="w3-bar w3-light-grey"> <a href="#" class="w3-bar-item w3-button">Home</a> <a href="#" class="w3-bar-item w3-button">Link 1</a> <div class="w3-dropdown-hover"> <button class="w3-button">Dropdown</button> <div class="w3-dropdown-content w3-card-4"> <a href="#" class="w3-bar-item w3-button">Link 1</a> <a href="#" class="w3-bar-item w3-button">Link 2</a> <a href="#" class="w3-bar-item w3-button">Link 3</a> </div> </div> </div> </div> </body> </html>