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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 rel="stylesheet" href="../../maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"> <script src="../../ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script src="../../cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script> <script src="../../maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script></head><body><div class="container"> <h2>Form control: radio buttons</h2> <p>The form below contains three radio buttons. The first option is checked by default, and the last option is disabled:</p> <form action="https://www.w3schools.com/action_page.php"> <div class="form-check"> <label class="form-check-label" for="radio1"> <input type="radio" class="form-check-input" id="radio1" name="optradio" value="option1" checked>Option 1 </label> </div> <div class="form-check"> <label class="form-check-label" for="radio2"> <input type="radio" class="form-check-input" id="radio2" name="optradio" value="option2">Option 2 </label> </div> <div class="form-check">