html {
    scroll-behavior: smooth;
}
#toc {
    background: #f9f9f9;
    padding: 15px;
    border: 1px solid #ddd;
    margin-bottom: 20px;
    display: flex;
}

#toc ul {
    list-style-type: none;
    padding-left: 10px;
}
#toc li {
    font-size: 0.9em;
}

#toc li span {
    margin-right: 5px;
}
#toc li a {
    text-decoration: none;
    color: #0081d6;
}

#toc li a:hover {
    text-decoration: underline;
}