Bootstrap/formcal.html at master · shubhammane555/Bootstrap · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/css/bootstrap.min.css">
</head>
<body>
    <main class="col-md-4 mx-auto mt-4">
        <header class="text-center">
<h6 class="display-4 text-danger">ONLINE CALCULATOR</h6>
        </header>
        <hr/>
        <div id="num1" name="number" class="form-group">
        <input type="text"
        placeholder="num1"
        class="form-control"
        autofocus
        required
        />
    </div>
    <div id="operation" name="op" class="form-group">
    <select name="abc">
        <option value="null">Select operation</option>
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
<option value="%">%</option>

    </select>
</div>
    <div id="num2" name="number1" class="form-group">
        <input type="text"
        placeholder="num1"
        class="form-control"
        autofocus
        required
        />
    </div>

    <div id="submitbutton" class="my-4">
        <input type="submit" value="calculate"
        class="btn btn-block btn-primary" />
    </div>
    </main>


</body>
</html>