div#toc {
    position: fixed;
    right: 10px;
    top: 80px;
    width: 20%;
}
div#toc li {
    font-size: 10pt;
    cursor: pointer;
    color: blue;
}

div.footer, div.title {
    text-align: center;
}

div#content {
    width: 80%;
    padding-left: 18%;
    font-size: medium;
}
div#content img {
    width: 60%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 40px;
    margin-bottom: 40px;
    border: 1px solid #cccc;
}
#imgPopup {
    position: fixed;
    z-index: 1033;
    width: 100%;
    height: 100%;
    background: #000000a6;
    top: 0;
    left: 0;
}
#imgPopup > img {
    margin: auto;
    display: block;
    padding-top: 10%;
    max-width: 80%;
    max-height: 80%;
}
div#content p > code,
div#content li > code
{
    padding-top: 0.2em;
    padding-bottom: 0.2em;
    font-size: 85%;
    background-color: rgba(0,0,0,0.04);
    border-radius: 3px;
}
div#content p > code::before,
div#content p > code::after {
  letter-spacing: -0.2em;
  content: "\00a0";
}

div#content pre {
    padding: 12px;
    background: #eee;
    border-radius: 2px;
    border: 1px solid #e0e0e0;
    border-left-width: 4px;
    word-wrap: break-word;
}
div#content .section {
    display: none;
}

div#content h2 {
    margin-top: 1em;
}

div#content {
    margin-top: 80px;
    box-sizing: border-box;
}

div#content table th {
    font-weight: bold;
}

div#content table th,
div#content table td {
    padding: 6px 13px;
    border: 1px solid #ddd;
}

div#content table tr {
    background-color: #fff;
    border-top: 1px solid #ccc;
}

div#content table tr:nth-child(2n) {
    background-color: #f8f8f8;
}

body {
    font-family: 'Open Sans', sans-serif;
    font: 125%/1.5 Helvetica Neue, Helvetica, Arial, sans-serif;
}

a {
    text-decoration: none;
}

a:hover {
    background-color: #55f;
    color: #fff;
}
@media only screen and (max-width: 767px) {
    div#toc, div#menu {
        display: none;
    }
    div#content {
        width: 100%;
        padding: 4px;
    }
    width: 80%;
}
////////////////////////////////////////////////////////////////////////////////
.axis path,
.axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}

.x.axis path {
    display: none;
}

.line {
    fill: none;
    stroke: steelblue;
    stroke-width: 1.5px;
}

////////////////////////////////////////////////////////////////////////////////
.tip {
    stroke: green;
    font: 19px sans-serif;
}
.state {
    cursor: pointer;
}
.button {
    cursor: pointer;
    stroke: blue;
    font: 12px sans-serif;
}
.overlay {
    cursor: move;
    fill: none;
    pointer-events: all;
}

.axis path,
.axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}

.x.axis path {
    stroke: #000;
}

.line {
    fill: none;
    stroke: steelblue;
    stroke-width: 1.5px;
}
