MatrixSynapse/develop/website_files/table-of-contents.css

:root {
    --pagetoc-width: 250px;
}

@media only screen and (max-width:1439px) {
    .sidetoc {
        display: none;
    }
}

@media only screen and (min-width:1440px) {
    main {
        position: relative;
        margin-left: 100px !important;
        margin-right: var(--pagetoc-width) !important;
    }
    .sidetoc {
        margin-left: auto;
        margin-right: auto;
        left: calc(100% + (var(--content-max-width))/4 - 140px);
        position: absolute;
        text-align: right;
    }
    .pagetoc {
        position: fixed;
        width: var(--pagetoc-width);
        overflow: auto;
        right: 20px;
        height: calc(100% - var(--menu-bar-height));
    }
    .pagetoc a {
        color: var(--fg) !important;
        display: block;
        padding: 5px 15px 5px 10px;
        text-align: left;
        text-decoration: none;
    }
    .pagetoc a:hover,
    .pagetoc a.active {
        background: var(--sidebar-bg) !important;
        color: var(--sidebar-fg) !important;
    }
    .pagetoc .active {
        background: var(--sidebar-bg);
        color: var(--sidebar-fg);
    }
}