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<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"><h2>Responsive Navigation Bars</h2><p>The <strong>w3-mobile</strong> class defines responsive elements.</p><p>On medium and large screens (tablets and desktops), the bar items will appear side by side horizontally. On smalls screens (smartphones), the items are vertically and centered:</p><p><strong>Resize the browser window to see the effect.</strong></p><p>Default navigation bar:</p><div class="w3-bar w3-black"> <a href="#" class="w3-bar-item w3-button">Home</a> <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><p>Responsive navigation bar:</p><div class="w3-bar w3-black"> <a href="#" class="w3-bar-item w3-button w3-mobile">Home</a> <a href="#" class="w3-bar-item w3-button w3-mobile">Link 1</a> <a href="#" class="w3-bar-item w3-button w3-mobile">Link 2</a> <a href="#" class="w3-bar-item w3-button w3-mobile">Link 3</a></div></div></body></html>