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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h1>排版</h1> <p>The <abbr title="World Health Organization">WHO</abbr> was founded in 1948. (normal abbr)</p> <p>The <abbr title="World Health Organization" class="initialism">WHO</abbr> was founded in 1948. (slightly smaller abbr)</p> </div> </body> </html>