data8/_sass/components/_components.textbook__sidebar-right.scss

/**
 * Styling for within-page navigation.
 *
 * [1]: When the screen is large enough to hold the sidebar, place the sidebar
 *   offset a bit off the right side of the screen.
 *
 * [2]: When the screen is large enough that the page content itself starts
 *   having margins, use a semi-hack to position the sidebar just the right
 *   offset from the center of the screen to be in the correct spot. We're
 *   aiming to have the sidebar positioned just to the right of the page
 *   content which means we take the page width without the sidebar, divide it
 *   by 2, and add padding.
 */

/* [2] */
.sidebar__right > * {
    direction: ltr;
}

aside.sidebar__right {
    // Positioning
    overflow-x: hidden;
    background-color: $book-background-color;
    overflow-y: auto;
    max-height: 90vh; // Required for scrolling to work properly
    scrollbar-width: thin;
    direction: rtl;

    // Font and look
    font-family: -apple-system, BlinkMacSystemFont, 'Roboto', 'Segoe UI',
        'Helvetica Neue', 'Lucida Grande', Arial, sans-serif;
    color: #7a8288;
    border-left: 1px solid #c3c3c3;
    text-transform: uppercase;
    letter-spacing: 1px;

    // Show/hide navbar underneath
    nav {
        transition: opacity .25s ease-in-out, height .25s ease-in-out;
        -moz-transition: opacity .25s ease-in-out, height .25s ease-in-out;
        -webkit-transition: opacity .25s ease-in-out, height .25s ease-in-out;
        overflow-y: hidden;
        opacity: 0;
        height: 0px;

        @include mq($from: desktop) {
            opacity: 100;
            height: auto;
        }

        @include mq($from: laptop) {
            &.no_sidebar_content {
              opacity: 100;
              height: auto;
            }
        }
    }

    &:hover nav {
        opacity: 100;
        height: auto;
    }
}


h4.nav__title {
    color: #7a8288;
    margin: 0;
    padding: 0.5rem 1rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Roboto', 'Segoe UI',
        'Helvetica Neue', 'Lucida Grande', Arial, sans-serif;
    font-size: 0.8em;
    font-weight: bold;
}

ul.toc__menu {
    margin: 0;
    padding: 0;
    width: 100%;
    list-style: none;
    font-size: 0.8rem;
}

ul.toc__menu a {
    display: block;
    padding: 0.25rem .75rem;
    color: #898c8f;
    font-size: 0.8em;
    font-weight: bold;
    line-height: 1.5;
}

.toc__menu ul {
    margin-left: 0px;
}

.toc__menu li ul {
    li {
        list-style-type: none;
        padding-left: 18px;
    }

    a {
        font-weight: normal;
        padding: 0.25rem .5rem;
    }
}

// Active sidebar entries
nav.onthispage li.active a {
    color: #0077d8;
}

li.active {
    border-left: 1px solid #0077d8;
    margin-left: -1px;
}