        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }
        .container {
            max-width: 600px;
            margin: 0 auto;
        }
        textarea, input, button {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            font-size: 16px;
        }
        .result {
            background-color: #f9f9f9;
            padding: 10px;
            border: 1px solid #ddd;
            margin-top: 20px;
            word-wrap: break-word;
        }
        .hidden {
            display: none;
        }