body {
    background-color: #e6f5e6;
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
    margin: 0;
    padding: 20px;
}

h1 {
    color: #2e7d32;
}

h2 {
    color: #388e3c;
}

p {
    font-size: 16px;
    color: #333;
}

.nav {
    margin: 20px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 15px;
    margin: 5px;
    font-size: 14px;
    border-radius: 5px;
}

button:hover {
    background-color: #2e7d32;
}

#quiz {
    margin: 20px auto;
    max-width: 500px;
    text-align: left;
    background-color: #ffffff;
    padding: 15px;
    border-radius: 8px;
}

#result {
    margin-top: 20px;
    font-weight: bold;
    color: #1b5e20;
}

.section {
    margin: 20px auto;
    max-width: 600px;
}