html,
body {
  font-family: Verdana;
  width: 100%;
  margin: 0;
  padding: 0;
}
body {
  background: url('../images/paper.png');
}
header,
section,
footer {
  width: 960px;
  margin: 0 auto;
}
header {
  font-family: Times;
  text-align: center;
  margin-bottom: 2rem;
}
header h1 {
  font-size: 360%;
  margin: 0;
  margin-bottom: 1rem;
}
header h2 {
  font-size: 125%;
  margin: 0;
}
article {
  font-family: Verdana;
  width: 960px;
  height: auto;
  margin: auto;
  background: rgba(255, 255, 255, 0.74);
  border: solid rgba(255, 0, 0, 0.35);
  border-width: 0;
  border-left-width: 1px;
  padding: 1em;
  box-shadow: 25px 0px 25px 25px rgba(255, 255, 255, 0.74);
}
a,
a:visited {
  color: #0000c8;
  text-decoration: none;
}
footer {
  font-style: italic;
  margin: 2em 0 1em 0;
  background: inherit;
}
.ribbon {
  position: fixed;
  top: 0;
  right: 0;
  height: 0;
  overflow: visible;
}
.ribbon img {
  position: relative;
  z-index: 999;
}
navigation {
  font-family: Georgia;
  display: block;
  width: 70%;
  margin: 0 auto;
  padding: 0;
  border: 1px solid grey;
}
navigation ul {
  background: #F2F2F9;
  list-style: none;
  margin: 0;
  padding: 0.5em 1em;
}
navigation ul li:nth-child(n+2)[data-number]:before {
  content: "§" attr(data-number) ". ";
}
navigation ul li:nth-child(n+2):not([data-number]) {
  margin: 5px 0;
}
navigation.compact {
  width: 100%;
  border: none;
  border-top: 1px solid grey;
  padding-top: 2em;
  margin-top: 2em;
}
navigation.compact ul {
  background: inherit;
}
navigation.compact ul li {
  display: inline-block;
}
navigation.compact ul li:not(:last-child) {
  margin-right: 1em;
}
section {
  margin-top: 4em;
}
section p {
  text-align: justify;
}
section h2[data-num] {
  border-bottom: 1px solid grey;
}
section h2[data-num]:before {
  content: "§" attr(data-num) " — ";
}
section h2 a,
section h2 a:active,
section h2 a:hover,
section h2 a:visited {
  text-decoration: none;
  color: inherit;
}
section table {
  margin: auto;
}
section table p {
  text-align: center;
}
div.note {
  font-size: 90%;
  margin: 1em 2em;
  padding: 1em;
  border: 1px solid grey;
  background: rgba(150, 150, 50, 0.05);
}
div.note h1,
div.note h2,
div.note h3,
div.note h4,
div.note h5,
div.note h6,
div.note p {
  margin: 0;
  padding: 0;
}
div.note p {
  margin: 1em 0;
}
div.note div.MathJax_Display {
  margin: 1em 0;
}
.howtocode {
  border: 1px solid #8d94bd;
  padding: 0 1em;
  margin: 0 2em;
  overflow-x: hidden;
}
.howtocode h3 {
  margin: 0 -1em;
  padding: 0;
  background: #91bef7;
  padding-left: 0.5em;
  color: white;
  text-shadow: 1px 1px 0 #000000;
  cursor: pointer;
}
.howtocode pre {
  border: 1px solid #8d94bd;
  background: rgba(223, 226, 243, 0.32);
  margin: 0.5em;
  padding: 0.5em;
}
figure {
  display: inline-block;
  border: 1px solid grey;
  background: #F0F0F0;
  padding: 0.5em 0.5em 0 0.5em;
  text-align: center;
}
figure.inline {
  border: none;
  margin: 0;
}
figure canvas {
  display: inline-block;
  background: white;
  border: 1px solid lightgrey;
}
figure canvas:focus {
  border: 1px solid grey;
  outline: none;
}
figure figcaption {
  text-align: center;
  padding: 0.5em 0;
  font-style: italic;
  font-size: 90%;
}
figure figcaption button {
  font-family: Verdana;
  border: 1px solid grey;
  border-radius: 3px;
  background: #FDFDFD;
}
figure figcaption button.selected {
  background: #c8c8ff;
}
figure figcaption button + button {
  margin-left: 0.25em;
}
figure:not([class=inline]) + figure:not([class=inline]) {
  margin-top: 2em;
}
div.figure {
  display: inline-block;
  border: 1px solid grey;
  text-align: center;
}
github-issues {
  position: relative;
  display: block;
  width: 100%;
  border: 1px solid #EEE;
  border-left: 0.3em solid #e5ecf3;
  background: white;
  padding: 0 0.3em;
  width: 95%;
  margin: auto;
  min-height: 33px;
  font: 13px Helvetica, arial, freesans, clean, sans-serif;
}
github-issues github-issue + github-issue {
  margin-top: 1em;
}
github-issues github-issue h3 {
  font-size: 100%;
  background: #e5ecf3;
  margin: 0;
  position: relative;
  left: -0.5%;
  width: 101%;
  font-weight: bold;
  border-bottom: 1px solid #999;
}
github-issues github-issue a {
  position: absolute;
  top: 2px;
  right: 10px;
  padding: 0 4px;
  color: #4183C4!important;
  background: white;
  line-height: 10px;
  font-size: 10px;
}
img.LaTeX {
  display: block;
  margin-left: 2em;
}
table {
  margin: 1em 2em;
  padding: 0 1em;
  border: 1px solid grey;
  background: rgba(150, 150, 50, 0.05);
}
table img {
  border: 1px solid lightgrey;
}
footer {
  font-size: 85%;
  font-family: Verdana;
  border-top: 1px solid grey;
  padding: 2em 1.25em 0;
  box-sizing: content-box;
  margin-left: -1rem;
}
.relatives {
  width: 100%;
  border: 1px solid #CCC;
  padding: 0.25rem 1rem;
  margin-left: -1rem;
  box-sizing: content-box;
}
.relatives.before {
  border-width: 1px 0px;
  margin-bottom: -2rem;
}
.relatives.after {
  margin-top: 2rem;
  border-width: 1px 0 0 0;
  border-color: grey;
  margin-bottom: -1.5rem;
}
.relatives .prev:before {
  content: "← ";
}
.relatives .next:after {
  content: " →";
}
.relatives tbody {
  margin: 0;
}
.relatives tbody tr {
  margin: 0;
}
.relatives tbody tr td {
  width: 50%;
}
.relatives tbody tr td:nth-child(1) {
  text-align: left;
}
.relatives tbody tr td.toc {
  text-align: center;
  white-space: nowrap;
  width: 0%;
}
.relatives tbody tr td.toc:before {
  content: "[";
}
.relatives tbody tr td.toc:after {
  content: "]";
}
.relatives tbody tr td:nth-child(3) {
  text-align: right;
}
.bspline-graphic {
  border: 1px solid black;
  background: white;
}
.two-column {
  display: flex;
  flex-direction: row-reverse;
}
.two-column canvas {
  flex: none;
}
.two-column section {
  margin-top: 0;
  padding-left: 2em;
}
code {
  background: #DDE;
  padding: 1px 3px;
}