body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }

        .question {
            margin-bottom: 10px;
            font-size: 18px;
        }

        .feedback {
            margin: 10px 0;
            font-weight: bold;
        }

        .choices button {
            display: block;
            margin: 5px 0;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid #ccc;
            cursor: pointer;
            width: 200px;
            text-align: left;
        }

        .choices button.correct {
            background-color: #c8e6c9;
        }

        .choices button.wrong {
            background-color: #ffcdd2;
        }

        .result {
            font-size: 20px;
            font-weight: bold;
            margin-top: 20px;
        }