#toc .link.backmatter ~ .link > a {
    background-color: #fafafa;
    border-top: none;
    text-transform: none;
    font-weight: 600;
}
#toc .link.backmatter ~ .link {
    margin-top: 0;
}
#toc .link.backmatter ~ .link > a:hover {
    background-color: var(--bluegreen);
    color: #fff;
}