body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 20px;
            background-color: #f4f4f4;
        }
        .quiz-container {
            background-color: #fff;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            margin: auto;
        }
        .question {
            margin-bottom: 20px;
        }
        button {
            background-color: #2a9d8f;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
        }
        button:hover {
            background-color: #0e4d92;
        }
        #result {
            display: none;
            margin-top: 20px;
            padding: 15px;
            background-color: #eafaf1;
            border: 1px solid #2a9d8f;
            border-radius: 5px;
        }
        .content {
            margin-top: 20px;
            background-color: #fff;
            padding: 15px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }