147 <meta name="viewport" content="width=devicewidth, initial-scale=1, shrink-to-fit=no"> <!-- Bootstrap CSS --> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/ 4.4.1/css/bootstrap.min.css" integrity="sha384Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9 MuhOf23Q9Ifjh" crossorigin="anonymous"> <link rel="stylesheet" href="../css/example.css"> <title><?= $judul ?></title> </head> <body> <div class="cover-container d-flex w-100 h-100 p-3 mx-auto flex-column"> <!-- Navbar Link --> <header class="masthead mb-auto"> <div class="inner"> <h3 class="masthead-brand"><?= $judul ?></h3> <nav class="nav nav-masthead justifycontent-center"> <a class="nav-link" href="../index.php">Home</a> <a class="nav-link active" href="example.php">Examples</a> <a class="nav-link" href="about.php">About Us</a> </nav> </div> </header> <main role="main" class="inner cover"> <div class="card"> <div class="card-body"> <h1 class="cover-heading"><?= $materi; ?></h1> <div class="container"> <!-- Form User Input --> <form> <div class="form-row first"> <div class="col-sm-10 mb-2"> <label for="Zin">Input Impedance : </label> <input type="text" class="formcontrol" id="Zin" required>
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