body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.quiz-container {
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 90%;
    text-align: center;
}

h1 {
    font-size: 24px;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 10px;
}

p {
    color: #555;
    font-size: 16px;
}

.quiz {
    margin-top: 10px;
    text-align: left;
}

.question {
    width: 100%;
    padding: 12px 16px;
    background-color: #f5f5f7;
    border: none;
    border-radius: 8px;
    text-align: left;
    font-size: 16px;
    cursor: pointer;
    outline: none;
    color: #333;
    font-weight: 500;
    transition: background 0.3s ease;
}

.question:hover {
    background-color: #e5e5e7;
}

.answer {
    display: none;
    padding: 10px 16px;
    font-size: 16px;
    color: #0071e3;
    font-weight: bold;
    border-left: 4px solid #0071e3;
    margin-top: 5px;
    background-color: #eef5ff;
    border-radius: 5px;
}