* {
  box-sizing: border-box;
  margin: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  font-size: calc(0.8em + 1.25vw);
  line-height: 1.3;
  color: #333;
  background-color: #fbfaf9;
}

a {
  color: palevioletred;
  text-decoration-skip: ink;
}

h1 {
  text-align: center;
}

h1,
h2 {
  line-height: 1;
  color: #444;
}

p {
  margin-top: 1em;
  max-width: 50rem;
}

img {
  margin-left: 1em;
}

ul {
  margin-top: 1em;
  padding-left: 1em;
}

pre {
  margin-top: 1em;
  padding: 1em;
  max-width: 20rem;
  font-size: 0.8rem;
  color: #fbfaf9;
  background-color: #444;
  border-radius: 2px;
}

@media (min-width: 40em) {
  pre {
    font-size: 1.125rem;
    max-width: 50rem;
  }
}

.container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.slide {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  padding: 2em 2em;
  -webkit-box-flex: 1;
  -ms-flex: 1 0 100%;
  flex: 1 0 100%;
  border: 1em solid tomato;
}
@media (min-width: 40em) {
  .slide {
    padding: 2em 4em;
  }
}
.slide:nth-child(2n) {
  border-color: skyblue;
}
.slide:first-child {
  border-color: palevioletred;
}
.slide--image {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.slide--image > .slide__content {
  -ms-flex-preferred-size: 60%;
  flex-basis: 60%;
}
.slide--image > .slide__content > p {
  max-width: 100%;
}
.slide__embed {
  margin-top: 1em;
  position: relative;
  width: calc(100vw * 0.66);
  height: calc(56.25vw * 0.66);
}
.slide__embed > iframe {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}

.nav {
  position: fixed;
  bottom: 0;
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 2em;
}
.nav__button {
  padding: 0.5em;
  color: #666;
  background: none;
  border: none;
}
.nav__button:disabled {
  display: none;
}
.nav__button:focus {
  outline: none;
}

.icon {
  vertical-align: middle;
}

/* http://prismjs.com/download.html?themes=prism&languages=clike+javascript */
/**
 * prism.js default theme for JavaScript, CSS and HTML
 * Based on dabblet (http://dabblet.com)
 * @author Lea Verou
 */

code[class*='language-'],
pre[class*='language-'] {
  color: black;
  background: none;
  text-shadow: 0 1px white;
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  text-align: left;
  white-space: pre;
  word-spacing: normal;
  word-break: normal;
  word-wrap: normal;
  line-height: 1.5;

  -moz-tab-size: 2;
  -o-tab-size: 2;
  tab-size: 2;

  -webkit-hyphens: none;
  -moz-hyphens: none;
  -ms-hyphens: none;
  hyphens: none;
}

pre[class*='language-']::-moz-selection,
pre[class*='language-'] ::-moz-selection,
code[class*='language-']::-moz-selection,
code[class*='language-'] ::-moz-selection {
  text-shadow: none;
  background: #b3d4fc;
}

pre[class*='language-']::selection,
pre[class*='language-'] ::selection,
code[class*='language-']::selection,
code[class*='language-'] ::selection {
  text-shadow: none;
  background: #b3d4fc;
}

@media print {
  code[class*='language-'],
  pre[class*='language-'] {
    text-shadow: none;
  }
}

/* Code blocks */
pre[class*='language-'] {
  overflow: auto;
}

:not(pre) > code[class*='language-'],
pre[class*='language-'] {
  background: #f5f2f0;
}

/* Inline code */
:not(pre) > code[class*='language-'] {
  padding: 0.1em;
  border-radius: 0.3em;
  white-space: normal;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: slategray;
}

.token.punctuation {
  color: #999;
}

.namespace {
  opacity: 0.7;
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
  color: #905;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #690;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #a67f59;
  background: hsla(0, 0%, 100%, 0.5);
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: #07a;
}

.token.function {
  color: #dd4a68;
}

.token.regex,
.token.important,
.token.variable {
  color: #e90;
}

.token.important,
.token.bold {
  font-weight: bold;
}
.token.italic {
  font-style: italic;
}

.token.entity {
  cursor: help;
}