* {
            transition: all 0.3s ease;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: Arial, sans-serif;
            background-color: #ffffff;
            color: #333333;
        }

        .container {
            max-width: 600px;
            margin: 0 auto;
            margin-top: 50px;
            padding: 20px;
            border: 1px solid #ccc;
            border-radius: 5px;
            background-color: #f9f9f9;
            text-align: center;
        }

        

        .button {
            padding: 10px 15px;
            border: none;
            border-radius: 5px;
            background-color: #28a745;
            color: white;
            cursor: pointer;
            display: block;
            margin: 20px auto;
        }

        .button:hover {
            background-color: #218838;
        }

        

        /* Dark mode styles */
        body.dark-mode {
            background-color: #121212;
            color: #ffffff;
        }

        body.dark-mode .container {
            background-color: #1e1e1e;
            border-color: #444444;
            color: #ffffff;
        }

        body.dark-mode .button {
            background-color: #198754 !important;
        }

        body.dark-mode .button:hover {
            background-color: #157347 !important;
        }

        body.dark-mode .theme-toggle {
            background-color: #6c757d;
        }

        body.dark-mode .theme-toggle:hover {
            background-color: #5a6268;
        }