:root{
    --MAIN-LINK-color:#a31c1c; /* Color of links */

    --MENU-SEARCH-BG-color: #252c31; /* Search field background color (by default borders + icons) */
    --MENU-SEARCH-BOX-color: #000000; /* Override search field border color */
    --MENU-SEARCH-BOX-ICONS-color: #ffffff; /* Override search field icons color */

    --MENU-HEADER-BG-color: #a00000; /* Background color of menu header */
    --MENU-HEADER-BORDER-color: #cc1010; /*Color of menu header border */ 

    --MENU-SECTION-ACTIVE-CATEGORY-color: #fff; /* Color of active category text */
    --MENU-SECTION-ACTIVE-CATEGORY-BG-color: #777; /* Color of background for the active category (only) */

}

body {
    font-weight: normal;
}

#body {
    margin-left: 400px;
}

#sidebar {
    width: 400px;
}

@media only all and (max-width: 47.938em) {
    #sidebar {
        width: 230px;
        left: -230px;
    }
    #body {
        margin-left: 0;
        width: 100%;
    }
    .sidebar-hidden {
        overflow: hidden;
    }
    .sidebar-hidden #sidebar {
        left: 0;
    }
    .sidebar-hidden #body {
        margin-left: 230px;
        overflow: hidden;
    }
    .sidebar-hidden #overlay {
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        z-index: 10;
        background: rgba(255, 255, 255, 0.5);
        cursor: pointer;
    }
}

#sidebar ul.topics li.parent ul.range-sections, #sidebar ul.topics > li.active ul.range-sections {
    display: none;
}

#sidebar ul.topics li.parent > ul.range-sections, #sidebar ul.topics li.active > ul.range-sections {
    display: block;
}

.small-video {
    width: 640px;
    margin: auto;
}

.video-responsive {
    overflow:hidden;
    padding-bottom:56.25%;
    position:relative;
    height:0;
}
.video-responsive iframe {
    left:0;
    top:0;
    height:100%;
    width:100%;
    position:absolute;
}

.author {
    font-weight: 200;
    text-align: center;
    margin-top: -1.2rem;
    display: block;
    font-size: 2rem;
    text-rendering: optimizelegibility;
}

.index-links {
    font-family: "Consolas", "DejaVu Sans Mono", monospace;
}