body {
            background-color: #495057;
            font-family: 'Arial', sans-serif;
        }
        .container {
            max-width: 600px;
            margin: 0 auto;
            padding: 30px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            font-size: 32px;
            font-weight: bold;
            text-align: center;
            margin-bottom: 40px;
            color: #333;
        }
        p {
            font-size: 16px;
            font-weight: bold;
            text-align: center;
            margin-bottom: 40px;
            color: #ffffff;
            border: 1px solid #020202;
            background-color: #0b9107;
        }
        label {
            font-size: 18px;
            font-weight: bold;
            color: #333;
        }
        .form-control {
            border: 1px solid #ced4da;
            border-radius: 5px;
            padding: 10px;
            margin-bottom: 20px;
            font-size: 16px;
        }
        .btn {
            display: block;
            width: 100%;
            padding: 12px;
            border: none;
            border-radius: 5px;
            font-size: 18px;
            transition: all 0.3s ease-in-out;
            margin-bottom: 10px;
        }
        .btn-primary {
            background-color: #007bff;
            color: #fff;
        }
        .btn-primary:hover {
            background-color: #0056b3;
        }
        .btn-secondary {
            background-color: #6c757d;
            color: #fff;
        }
        .btn-secondary:hover {
            background-color: #495057;
        }
        #output {
            resize: none;
        }