body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}
header {
    text-align: center;
    background-color: #007bff;
    color: white;
    padding: 10px;
}
h1 {
    margin: 0;
    font-size: 2em;
}
main {
    max-width: 800px;
    margin: 20px auto;
}
section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.subject {
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
button {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1em;
    margin-top: 10px;
}
button:hover {
    background-color: #218838;
}
.dropdown-content {
    display: none;
    padding: 10px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.dropdown-content p {
    margin: 5px 0;
}
.pdf-button {
    display: block;
    background-color: #dc3545;
    color: white;
    padding: 15px;
    text-align: center;
    text-decoration: none;
    margin-top: 10px;
    border-radius: 5px;
    font-size: 1.2em;
}
.pdf-button:hover {
    background-color: #c82333;
}
.disclaimer {
    font-size: 0.8em;
    color: #666;
    text-align: center;
    margin-top: 20px;
}