body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    padding: 20px;
    text-align: center;
}

.quiz-container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    max-width: 500px;
    margin: auto;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h2 {
    margin-bottom: 20px;
}

ul {
    list-style-type: none;
    padding: 0;
}

.answer-btn {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.answer-btn:hover {
    background-color: #0056b3;
}

#next-btn {
    padding: 10px 20px;
    margin-top: 20px;
    display: none;
}