.toc-container {
    position: fixed;
    left: 20px;
    top: 100px;
    width: 250px;
}

.toc {
    background: var(--toc-background-color, #f9f9f9);
    padding: 10px;
    border: 1px solid #ddd;
}

.toc-heading {
    font-size: var(--toc-font-size, 1.2em);
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--toc-text-color, #000);
}

.toc-list {
    list-style-type: none;
    padding: 0;
}

.toc-list li {
    margin-bottom: 5px;
}

.toc-list a {
    text-decoration: none;
    color: var(--toc-text-color, #333);
    font-size: var(--toc-font-size, 1em);
}

.toc-list a:hover {
    color: #0073aa;
}