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<html lang="en"><head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script></head><body><div class="container-fluid mt-3"> <h1>Basic Grid Structure</h1> <p>Resize the browser window to see the effect.</p> <p>The first, second and third row will automatically stack on top of each other when the screen is less than 576px wide.</p> <!-- Control the column width, and how they should appear on different devices --> <div class="row"> <div class="col-sm-6 bg-primary text-white">50%</div> <div class="col-sm-6 bg-dark text-white">50%</div> </div> <br> <div class="row"> <div class="col-sm-4 bg-primary text-white">33.33%</div> <div class="col-sm-4 bg-dark text-white">33.33%</div> <div class="col-sm-4 bg-primary text-white">33.33%</div> </div>