#toc-container {
    margin: 20px 0;
    padding: 10px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    font-family: Arial, sans-serif;
}

#toc-container h2 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

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

#toc-container ul li {
    margin: 5px 0;
}

#toc-container ul li a {
    text-decoration: none;
    color: #333;
}

#toc-container ul li a:hover {
    color: #007BFF;
}

#toc-container ul li a.active {
    font-weight: bold;
    color: #007BFF;
}