html, body, main.container-fluid {
    height: 100%;
}

.container-fluid {
    padding-left: 0px;
}

.flex {
    display: flex
}

.justify-start {
    justify-content: flex-start
}

.justify-end {
    justify-content: flex-end
}

.justify-center {
    justify-content: center
}

.justify-between {
    justify-content: space-between
}

.align-center {
    align-items: center
}

.mx-auto {
    margin: 0 auto
}

.hide {
    display: none
}

html {
    scroll-behavior: smooth
}

html,
body {
    min-width: 25rem;
    overflow-x: hidden
}

body {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    box-sizing: border-box
}

body * {
    box-sizing: inherit
}

img {
    vertical-align: middle
}

aside.book-menu {
}

aside nav ol {
    padding: 0;
    margin: 0;
    list-style: none
}

aside nav ol li {
    margin: 1.0em 0
}

aside nav ol a {
    display: block;
    font-size: 15px;
    margin-bottom: 0.5rem;
    line-height: 1.26rem;
    font-weight: 500;
    letter-spacing: 0.018em;
	  font-family: "SF Pro Display", "SF Pro Icons", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
    color: #666666;
}

aside nav ol a:hover {
    opacity: .5
}

aside nav ol ol {
    padding-left: 0.5rem
}

.container {
    min-width: 25rem;
    max-width: 80rem;
    margin: 0 auto
}

.book-menu {
    flex: 0 0 15rem;
}

.book-menu nav {
    width: 18rem;
    padding: 1rem;
    position: fixed;
    top: 0;
    bottom: 0;
    overflow-x: hidden;
    overflow-y: auto
}

.book-page {
    min-width: 25rem;
    padding: 1rem
}

.book-header {
    margin-bottom: 1rem;
    margin-left: 1.5rem;
    display: none
}

.book-toc {
    flex: 0 0 10rem;
    font-size: .75rem;
    border-left: 1px solid #e5e5e5;
}

.book-toc nav {
    width: 14rem;
    padding: 1rem;
    position: fixed;
    top: 0;
    bottom: 0;
    overflow-x: hidden;
    overflow-y: auto
}

.book-toc nav>ul>li {
    margin: 0
}

aside nav,
.book-page {
    transition: .2s ease-in-out;
    transition-property: transform, margin-left, opacity;
    will-change: transform, margin-left
}

.feather {
    width: 16px;
    height: 16px;
    vertical-align: text-bottom;
}

article.markdown {
    max-width: 56rem !important;
}

.nav-wrapper {
    margin-top: 50px;
    display: none;
    margin-bottom: 50px;
}

.mobile-nav-chapters { 
    font-size: 2.5em;
    text-align: center;
    text-decoration: none;
    width: 90px;
    border-radius: 5px;
    background-color: var(--sidebar-bg);
    margin-bottom: 50px;
}

.previous {
    float: left;
}

.next {
    float: right;
    right: var(--page-padding);
}

@media only screen and (max-width: 1080px) {
    .nav-wide-wrapper { display: none; }
    .nav-wrapper { display: block; }
}

@media only screen and (max-width: 1380px) {
    .sidebar-visible .nav-wide-wrapper { display: none; }
    .sidebar-visible .nav-wrapper { display: block; }
}

nav.nav-wrapper a, nav.nav-wide.wrapper a {
    background-color: #eee;
    margin: 0px;
    padding: 0px;
}

nav.nav-wrapper a svg, nav.nav-wide.wrapper a svg {
    width: 32px;
    height: 32px;
    padding: 0px;
    margin: 4px;
}

@media screen and (min-width:77rem) {
    .book-menu {
        flex: 0 0 25rem !important;
    }
    .book-menu nav {
        padding: 1rem 4rem !important;
        width: 25rem;
    }
}

@media screen and (max-width:57rem) {
    .book-toc {
        display: none
    }
}

@media screen and (max-width:43rem) {
    .book-menu {
        margin-left: -18rem
    }

    .book-header {
        display: flex
    }

    #menu-control:checked+main .book-menu nav,
    #menu-control:checked+main .book-page {
        transform: translateX(18rem)
    }

    #menu-control:checked+main .book-header label {
        transform: rotate(90deg)
    }

    #menu-control:checked+main .markdown {
        opacity: .25
    }
    .container-fluid {
        padding-left: 15px;
    }
}

@media screen and (min-width:80rem) {

    .book-page,
    .book-menu nav,
    .book-toc nav {
        padding: 2rem 1rem
    }
}