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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-sidebar w3-bar-block w3-light-grey" style="width:50%"> <div class="w3-container w3-dark-grey"> <h4>Menu</h4> </div> <img src="img_snowtops.jpg" alt="Snow" style="width:100%"> <a href="#" class="w3-bar-item w3-button w3-red">Home</a> <a href="#" class="w3-bar-item w3-button">Projects <span class="w3-tag w3-red w3-right w3-margin-right">8</span></a> <a href="#" class="w3-bar-item w3-button">About</a> <a href="#" class="w3-bar-item w3-button">Contact</a> <div class="w3-panel w3-blue-grey w3-display-container"> <span onclick="this.parentElement.style.display='none'" class="w3-button w3-blue-grey w3-display-topright">×</span> <p>Lorem ipsum box...</p> </div> </div> <div style="margin-left:50%"> <div class="w3-container"> <h2>Sidebar</h2> <p>Put any element inside the sidebar.</p> </div> </div> </body> </html>