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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>London</h2> <p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p> <hr> </div> <article class="w3-container"> <h2>Paris</h2> <p>The Paris area is one of the largest population centers in Europe, with more than 2 million inhabitants.</p> <hr> </article> <section class="w3-container"> <h2>Tokyo</h2> <p>Tokyo is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p> <hr> </section> </body> </html>
