:root {
    --bkg-color: #f5f7f9;
    --menu-hover-color: #f5f5f5;
    --content-color: #fff;
    --code-bkg-color: #eee;
    --border-color: #000000;
    --link-color: #527d9a;  
    --shadow-color: #777777;
    --text-color: #555;
    --brand-color: #000000;
    --fontsize-normalsize: 1em;
    --fontsize-small: 0.875em;
}
html {
    height: 100%;
    line-height: 1.15; /* 1 */
    -webkit-text-size-adjust: 100%; /* 2 */
}
.site-meta {
    flex-grow: 1;
    text-align: center;
    padding: 20px 0;
}
.site-title {
    font-size: 1.375em;
    font-weight: normal;
    margin: 0;
}
.site-subtitle {
    color: #ddd;
    font-size: 0.8125em;
    margin: 10px 0;
    margin: 10px 10px 0;
}



/**************************************************/
/* body, header, banner, navigation bar, TOC, etc */
/**************************************************/

/* body */

body {
    height: 100%;
    margin: 0 auto;
    background: var(--bkg-color);
    color: var(--text-color);
    font-family: sans-serif;
    font-size: var(--fontsize-normalsize);
    line-height: 1.5;
    max-width: 60em;
}
#content {
    padding-top: 2em;
    background: var(--content-color);
    box-sizing: border-box;
    padding: 40px;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: normal;
    hyphens: auto;
    text-align: justify;
}
.title {
    font-size: 1.5em;
    font-weight: normal;
    margin: initial;
    margin-top: 1em;
    margin-bottom: 1.375em;
    text-align: center;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

header {
    z-index: 1;
    position: fixed;
    top: 0;
    background: var(--content-color);
    width: 60em;
    @media (max-width: 60em) {
        width: 100%;
    }
}

/* header-brand */
.site-brand-container {
    display: flex;
    flex-shrink: 0;
    background: var(--brand-color);
}
.brand {
    color: var(--content-color);
}

/* navigation bar - TOC (inspired by http://jashkenas.github.com/coffee-script) */
#table-of-contents {
    font-size: var(--fontsize-small);
    position: fixed;
    max-height: 80%; /* ensure doesn't flow off the screen when expanded */
    overflow: auto;
    box-shadow: 0 0 1em var(--shadow-color);
    background: var(--bkg-color);
}
#table-of-contents h2 {
    font-weight: normal;
    margin-top: 0.75em;
    padding: 0 0.5em 0 0.5em;
}
#text-table-of-contents a {
    color: var(--text-color);
    text-decoration: none;
}
#text-table-of-contents a:hover {
    color: var(--text-color);
    text-decoration: underline;
}
#table-of-contents #text-table-of-contents {
    display: none;
}
#table-of-contents:hover #text-table-of-contents {
    width: 240px;
    display: block;
}
#table-of-contents ul {
    list-style-type: none; /* Remove default bullet points */
    margin-left: 10px;
    padding: 0.25em; }

/* navigator - menu */
nav{
    font-size: var(--fontsize-small);
}
.menu {
    padding-left: 0;
    box-shadow: 0em 0em 1em var(--shadow-color);
    margin: 0;
    padding: 0; 
}
.menu-item {
    display: inline-block;
    list-style: none;
}
.menu-item a {
    color: var(--text-color);
    text-decoration: none;
    padding: 5px 10px;
    display: block;
    transition-delay: 0s;
    transition-duration: 0.2s;
    transition-timing-function: ease-in-out;
}
.menu-item a:hover {
    background: var(--menu-hover-color);
    border-bottom: none;
}
.menu-item .fa,
.menu-item .fab,
.menu-item .far,
.menu-item .fas {
    margin-right: 8px;
}



#org-div-home-and-up{
    position: fixed;
    right: 0.5em;
    margin-top: 70px;
}

h1,h2,h3,h4,h5,h6 {
    font-weight: bold;
    margin: 20px 0 15px;
}

h1 {
    font-size: 1.375em;
}

h2 {
    font-size: 1.25em;
}

h3 {
    font-size: 1.125em;
}

h4 {
    font-size: vara(--fontsize-normalsize);
}

h5 {
    font-size: var(--fontsize-small);
}

h6 {
    font-size: 0.75em;
}

p {
    margin: 0 0 10px 0;
}

a {
    color: var(--link-color);
    overflow-wrap: break-word;
    word-wrap: break-word;
    cursor: pointer;
}
a:hover {
    color: var(--text-color);
    border-bottom: 1px dotted;
}

hr {
    box-sizing: content-box; /* 1 */
    height: 0; /* 1 */
    overflow: visible; /* 2 */
    background-image: repeating-linear-gradient(-45deg, #ddd, #ddd 4px, transparent 4px, transparent 8px);
    border: 0;
    height: 3px;
    margin: 15px 0;
}

.org-ul, .org-ol {
    margin-top: -5px;
    margin-bottom: 5px;
}

.footdef {
    margin-bottom: 0em;
    font-size: var(--fontsize-small);
}


/*************/
/* div block */
/*************/

/* float - figure */
.figure p {
    text-align: center;
    margin: auto;
    width: 90%;
    font-size: var(--fontsize-small);
}

/* float - table */
table {
    border-collapse: collapse;
    border-spacing: 0;
    font-size: var(--fontsize-small);
    margin: 1em auto;
}

th, td {
    border: 1px solid var(--border-color);
}

th {
    font-weight: 700;
    padding-bottom: 10px;
}

code {
    background: var(--code-bkg-color);
}

blockquote {
    margin: 1em 2em;
    padding-left: 1em;
    border-left: 3px solid #ccc;
}

iframe, img, video {
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 100%;
}

.flex-container {
    display: flex;
    justify-content: space-between;
}



/**********/
/* footer */
/**********/
.footer {
    color: #999;
    font-size: var(--fontsize-small);
    padding: 20px 0;
    box-sizing: border-box;
    margin: 0 auto;
    text-align: right;
}