blog/themes/typing/source/css/typing.css

@charset "utf-8";

html {
  -webkit-text-size-adjust: 100%;
}

button,input,optgroup,select,textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1.15;
}

[type=button],[type=reset],[type=submit],button {
  -webkit-appearance: button;
}

[type=search]::-webkit-search-decoration {
  -webkit-appearance: none;
}

html.borderbox *,html.borderbox :after,html.borderbox :before {
  box-sizing: border-box;
}

article,aside,blockquote,body,button,code,dd,details,dl,dt,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hr,input,legend,li,menu,nav,ol,p,pre,section,td,textarea,th,ul {
  margin: 0;
  padding: 0;
}

body,button,input,select,textarea {
  font: 300 1em/1.8 sans-serif;
}

button::-moz-focus-inner,input::-moz-focus-inner {
  padding: 0;
  border: 0;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

fieldset,img {
  border: 0;
}

blockquote {
  position: relative;
  font-weight: 400;
}

@media only screen and (max-width:640px) {
  blockquote {
    margin: 1em 0;
  }
}

abbr,acronym {
  border-bottom: 1px dotted;
  -webkit-font-feature-settings: normal;
  font-feature-settings: normal;
  font-variant: normal;
}

abbr {
  cursor: help;
}

del {
  text-decoration: line-through;
}

address,caption,cite,code,dfn,em,th,var {
  font-style: normal;
  font-weight: 400;
}

ol,ul {
  list-style: none;
}

caption,th {
  text-align: left;
}

q:after,q:before {
  content: '';
}

:root sub,:root sup {
  vertical-align: baseline;
}

.typo a {
  border-bottom: 1px solid #1abc9c;
}

.typo a:hover {
  border-bottom-color: #555;
  color: #555;
}

.typo a:hover,a,ins {
  text-decoration: none;
}

.typo-u,u {
  text-decoration: underline;
}

mark {
  background: #fffdd1;
  border-bottom: 1px solid #ffedce;
  padding: 2px;
  margin: 0 5px;
}

code,pre,pre tt {
  font-family: monospace,monospace;
}

pre {
  background: #f8f8f8;
  border: 1px solid #ddd;
  padding: 1em 1.5em;
  display: block;
  -webkit-overflow-scrolling: touch;
}

hr {
  border: none;
  border-bottom: 1px solid #cfcfcf;
  margin-bottom: 1em;
  box-sizing: content-box;
  height: 0;
  overflow: visible;
}

.typo-small,figcaption,small {
  font-size: .9em;
  color: #888;
}

[draggable] {
  cursor: move;
}

.clearfix:after,.clearfix:before {
  content: "";
  display: table;
}

.clearfix:after {
  clear: both;
}

.clearfix {
  zoom: 1;
}

.textwrap,.textwrap td,.textwrap th {
  word-wrap: break-word;
  word-break: break-all;
}

.textwrap-table {
  table-layout: fixed;
}

.typo dl,.typo form,.typo hr,.typo ol,.typo p,.typo pre,.typo table,.typo ul,.typo-dl,.typo-form,.typo-hr,.typo-ol,.typo-p,.typo-pre,.typo-table,.typo-ul,blockquote {
  margin-bottom: 1.2em;
}

h1,h2,h3,h4,h5,h6 {
  font-weight: 100;
  color: #000;
  line-height: 1.35;
}

.typo h1,.typo h2,.typo h3,.typo h4,.typo h5,.typo h6,.typo-h1,.typo-h2,.typo-h3,.typo-h4,.typo-h5,.typo-h6 {
  margin-top: 1.2em;
  margin-bottom: .6em;
  line-height: 1.35;
}

.typo h1,.typo-h1 {
  font-size: 2em;
}

.typo h2,.typo-h2 {
  font-size: 1.8em;
}

.typo h3,.typo-h3 {
  font-size: 1.6em;
}

.typo h4,.typo-h4 {
  font-size: 1.4em;
}

.typo h5,.typo h6,.typo-h5,.typo-h6 {
  font-size: 1.2em;
}

.typo ul,.typo-ul {
  margin-left: 1.3em;
  list-style: disc;
}

.typo ol,.typo-ol {
  list-style: decimal;
  margin-left: 1.9em;
}

.typo li ol,.typo li ul,.typo-ol ol,.typo-ol ul,.typo-ul ol,.typo-ul ul {
  margin-bottom: .8em;
  margin-left: 2em;
}

.typo li ul,.typo-ol ul,.typo-ul ul {
  list-style: circle;
}

.typo table caption,.typo table td,.typo table th,.typo-table td,.typo-table th {
  border: 1px solid #ddd;
  padding: .5em 1em;
  color: #666;
}

.typo table th,.typo-table th {
  background: #fbfbfb;
}

.typo table thead th,.typo-table thead th {
  background: #f1f1f1;
}

.typo table caption {
  border-bottom: none;
}

.typo-input,.typo-textarea {
  -webkit-appearance: none;
  border-radius: 0;
}

.typo em,.typo-em,caption,legend {
  color: #000;
  font-weight: inherit;
}

.typo-em {
  position: relative;
}

.typo-em:after {
  position: absolute;
  top: .65em;
  left: 0;
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  content: "・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・";
}

.typo img {
  max-width: 100%;
}

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-rendering: optimizelegibility;
  font-family: sans-serif;
  line-height: 1.15;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

article,aside,details,figcaption,figure,footer,header,main,menu,nav,section,summary {
  display: block;
}

audio,canvas,progress,video {
  display: inline-block;
}

audio:not([controls]) {
  display: none;
  height: 0;
}

progress {
  vertical-align: baseline;
}

[hidden],template {
  display: none;
}

a {
  background-color: transparent;
  -webkit-text-decoration-skip: objects;
  color: #222;
  transition: color .25s linear;
  cursor: pointer;
}

a:active,a:hover {
  outline-width: 0;
}

abbr[title] {
  border-bottom: none;
  text-decoration: underline;
  -webkit-text-decoration: underline dotted;
  text-decoration: underline dotted;
}

dfn {
  font-style: italic;
}

h1 {
  font-size: 1.5em;
  margin: .5em 0;
}

mark {
  background-color: #ff0;
  color: #000;
}

small {
  font-size: 80%;
}

sub,sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -.25em;
}

sup {
  top: -.5em;
}

img {
  border-style: none;
}

svg:not(:root) {
  overflow: hidden;
}

code,kbd,pre,samp {
  font-family: monospace,monospace;
  font-size: .9em;
  background-color: #f3f5f6;
}

figure {
  margin: 1em 40px;
}

button,input,optgroup,select,textarea {
  font: inherit;
  margin: 0;
}

optgroup {
  font-weight: 700;
}

button,input {
  overflow: visible;
}

button,select {
  text-transform: none;
}

[type=reset],[type=submit],button,html [type=button] {
  -webkit-appearance: button;
}

[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring,button:-moz-focusring {
  outline: ButtonText dotted 1px;
}

fieldset {
  border: 1px solid silver;
  margin: 0 2px;
  padding: .35em .625em .75em;
}

legend {
  box-sizing: border-box;
  color: inherit;
  display: table;
  max-width: 100%;
  padding: 0;
  white-space: normal;
}

textarea {
  overflow: auto;
}

[type=checkbox],[type=radio] {
  box-sizing: border-box;
  padding: 0;
}

[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button {
  height: auto;
}

[type=search] {
  -webkit-appearance: textfield;
  outline-offset: -2px;
}

[type=search]::-webkit-search-cancel-button,[type=search]::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-webkit-input-placeholder {
  color: inherit;
  opacity: .54;
}

::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}

.article .article-entry blockquote footer cite a:hover,.article .article-nav-link-wrap:hover,.dark a:hover,a:hover {
  color: #22c5e5;
  border-bottom: 1px solid;
  transition: color .1s linear;
}

.archive-container hr,.archive-footer hr,.article .article-footer hr,.article hr,.category-container hr,.home hr,.post-footer hr,.tag-container hr {
  height: 1px;
  border: 0;
  background-image: -webkit-linear-gradient(0deg,transparent,#d5d5d5,transparent);
}

.main-nav-link {
  margin-right: 10px;
  color: #777;
  padding-bottom: 5px;
  display: inline-block;
  border: 0;
}

body,html {
  width: 100%;
  height: 100%;
  position: relative;
  box-sizing: border-box;
  color: #222;
}

body,h1,h2,h3,h4,h5,h6 {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -moz-font-feature-settings: "liga" on;
  transition: .25s;
}

body {
  margin: 0;
  font-family: serif;
  font-size: 1.2em;
}

h1,h2,h3,h4,h5,h6 {
  font-family: serif;
}

a,a:hover {
  text-decoration: none;
}

em {
  font-style: italic;
  font-weight: lighter;
}

b,strong {
  color: #000;
  font-weight: 700;
}

blockquote {
  color: #666;
  border-left: 2px solid #666;
  padding-left: 1em;
  margin: 1em 3em 1em -1em;
}

.footer {
  box-sizing: border-box;
}

.home-footer {
  padding: 50px 0;
}

.archive-footer a,.archive-footer b,.archive-footer strong,.post-footer a,.post-footer b,.post-footer strong {
  color: #aeb4b9;
}

.container {
  width: 100%;
}

.copyright,.footer-content,.footer-links {
  text-align: center;
  width: 100%;
  font-size: .9em;
  color: #cacdd0;
}

.copyright li,.footer-content li,.footer-links li {
  display: inline-block;
}

.copyright a,.footer-content a,.footer-links a {
  color: #777;
}

.copyright a:hover,.footer-content a:hover,.footer-links a:hover {
  color: #22c5e5;
}

.archive-footer,.post-footer {
  margin: 0 auto;
  padding: 1em 0;
  color: #cacdd0;
  width: 60%;
  max-width: 600px;
}

.footer-content {
  margin: 0 auto;
  text-align: left;
}

.footer-links {
  font-size: .9em;
  padding: 0;
}

.footer-links a {
  text-decoration: none;
}

.footer-links li {
  margin: 0 5px;
}

.home-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.home {
  font-weight: lighter;
  line-height: 1.4;
  color: #505050;
  text-align: center;
  position: relative;
}

.home a {
  border-bottom: 1px solid #eee;
}

.home .content {
  width: 60%;
  max-width: 500px;
  position: relative;
  margin: 0 auto;
}

.home h1,.home strong {
  color: #222;
}

.home hr {
  width: 80%;
  max-width: 300px;
  margin: 20px auto;
}

.home li {
  list-style: none;
}

.home .profile {
  width: 100%;
}

.home .profile h1 {
  font-weight: 300;
}

.nav-left {
  position: absolute;
  left: -130px;
  text-align: right;
}

.nav-left .main-nav-link {
  display: block;
  padding-bottom: 10px;
}

.header-hr-left,.mobile-nav {
  display: none;
}

.archive-container,.category-container,.tag-container {
  width: 60%;
  margin: 0 auto;
  position: relative;
  line-height: 1;
  text-align: left;
  font-size: 1em;
  padding-top: 3em;
  max-width: 700px;
}

.archive-container article,.category-container article,.tag-container article {
  margin-bottom: 15px;
}

.archive-container a,.archive-container a:hover,.category-container a,.category-container a:hover,.tag-container a,.tag-container a:hover {
  border: 0;
}

.archive-container .header,.category-container .header,.tag-container .header {
  font-size: 1em;
}

.archive-container .archive-article-header>a,.archive-container .archive-article-header>h1,.category-container .archive-article-header>a,.category-container .archive-article-header>h1,.tag-container .archive-article-header>a,.tag-container .archive-article-header>h1 {
  vertical-align: middle;
}

.archive-container .archive-article-header h1,.category-container .archive-article-header h1,.tag-container .archive-article-header h1 {
  width: calc(100% - 120px);
  font-size: 1em;
  margin: 0;
}

.archive-container hr,.category-container hr,.tag-container hr {
  width: 60%;
  margin: 20px 0 40px;
  background-image: -webkit-linear-gradient(0deg,#d5d5d5,#d5d5d5,transparent);
}

.archive-container .archive-article-date,.category-container .archive-article-date,.tag-container .archive-article-date {
  font-size: 1em;
  color: #cacdd0;
}

.archive-article-date {
  margin-right: .5em;
}

.archive-container .archive-article-title,.category-container .archive-article-title,.tag-container .archive-article-title {
  font-weight: 200;
}

.archive-container .archive-year-wrap,.category-container .archive-year-wrap,.tag-container .archive-year-wrap {
  margin-bottom: 20px;
}

.archive-container .page-nav,.category-container .page-nav,.tag-container .page-nav {
  text-align: center;
  margin-top: 30px;
  color: #aeb4b9;
}

.archive-container .page-nav a,.category-container .page-nav a,.tag-container .page-nav a {
  color: #777;
}

.archive-container .extend,.archive-container .page-number,.category-container .extend,.category-container .page-number,.tag-container .extend,.tag-container .page-number {
  margin-right: 15px;
}

.article {
  width: 80%;
  max-width: 1000px;
  margin: 0 auto;
}

.article .header {
  font-size: 1.1em;
  margin: .5em 0;
}

.article .main-nav-link:hover {
  border: 0;
}

.article .nav-left {
  position: relative;
  left: auto;
  text-align: initial;
}

.article .nav-left .main-nav-link {
  display: inline-block;
  padding-bottom: 5px;
}

.article .header-hr-left {
  display: block;
}

.article hr {
  width: 80%;
  background-image: -webkit-linear-gradient(0deg,#d5d5d5,#d5d5d5,transparent);
}

.article h1,.article h2,.article h3,.article h4,.article h5,.article h6 {
  font-weight: bolder;
}

.article .article-title {
  font-size: 2em;
}

.article a.fancybox,.article a.fancybox-item {
  border: 0;
}

.article .caption {
  color: #aeb4b9;
  display: block;
  font-size: 14px;
  text-align: center;
}

.article .article-entry {
  word-break: break-word;
}

.article .article-entry img {
  display: block;
  margin: auto;
}

.article .article-entry blockquote footer {
  text-align: center;
  font-size: 80%;
  color: #aeb4b9;
}

.article .article-entry blockquote footer cite {
  font-style: italic;
}

.article .article-entry blockquote footer cite a {
  color: #aeb4b9;
  border-bottom: 1px solid #eee;
  transition: color .25s linear;
}

.article .article-entry blockquote footer cite:before {
  content: "—";
  padding: 0 .5em;
}

.article .article-entry blockquote footer strong {
  color: #777;
  font-weight: 400;
}

.article .article-entry table caption,.article .article-entry table td,.article .article-entry table th,.article .article-entry td,.article .article-entry th {
  word-break: normal;
}

.article .article-entry .pullquote {
  width: 45%;
  border: 0;
}

.article .article-entry .pullquote.left {
  float: left;
  text-align: left;
}

.article .article-entry .pullquote.right {
  float: right;
  text-align: right;
}

.article .article-entry .video-container {
  position: relative;
  padding-top: 56.25%;
  margin-bottom: 30px;
  height: 0;
  overflow: hidden;
}

.article .article-entry .video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin-top: 0;
}

.article .article-nav {
  max-width: 100%;
}

.article .article-nav-link-wrap {
  display: inline-block;
  color: #aeb4b9;
  padding: 0 10px;
  width: 49%;
  box-sizing: border-box;
  vertical-align: top;
  border: 0;
}

.article .article-nav-link-wrap strong {
  color: #777;
}

.article .article-nav-link-wrap:hover {
  border-bottom: 0;
}

.article .article-nav-link-wrap.newer {
  text-align: right;
}

.article .article-nav-link-wrap.older {
  text-align: left;
}

.article .article-footer,.article .article-footer hr {
  margin-top: 1em;
}

.article .article-meta {
  font-size: .9em;
  color: #aeb4b9;
}

.article .article-meta a {
  color: #777;
}

.article .article-meta .label {
  margin-right: 10px;
}

.article .article-meta .article-category,.article .article-meta .article-tag-list {
  display: inline-block;
}

.article .article-meta .article-tag-list-item {
  display: inline-block;
  margin-right: 5px;
}

.article .article-meta .article-tag-list-item:before {
  content: '#';
}

.article .article-gallery img {
  width: 100%;
}

.article-type-page .article-footer {
  display: none;
}

.comments {
  width: 60%;
  max-width: 700px;
  margin: 50px auto 0;
}

.dark {
  color: #d8d8d8;
}

.dark,.dark .container,.dark .footer {
  background-color: #3f3f3f;
}

.dark a {
  color: #ddd;
}

.dark a:hover {
  color: #fff;
}

.dark .home {
  color: #d8d8d8;
}

.dark .home h1,.dark .home strong {
  color: #ddd;
}

.dark .home a {
  border-bottom: 1px solid #ddd;
}

.dark .home a:hover {
  border-bottom: 1px solid #fff;
}

.dark code,kbd,pre,samp {
  font-family: monospace,monospace;
  font-size: .9em;
  background-color: #333;
}

.dark .archive-container .header .main-nav-link,.dark .article .header .main-nav-link,.dark .category-container .header .main-nav-link,.dark .tag-container .header .main-nav-link {
  color: #aaa;
}

.dark .archive-container .header .main-nav-link:hover,.dark .article .header .main-nav-link:hover,.dark .category-container .header .main-nav-link:hover,.dark .tag-container .header .main-nav-link:hover {
  color: #fff;
}

.dark .archive-container .article-nav,.dark .archive-container .page-nav,.dark .article .article-nav,.dark .article .page-nav,.dark .category-container .article-nav,.dark .category-container .page-nav,.dark .tag-container .article-nav,.dark .tag-container .page-nav {
  color: #aaa;
}

.dark .archive-container .article-nav a,.dark .archive-container .page-nav a,.dark .article .article-nav a,.dark .article .page-nav a,.dark .category-container .article-nav a,.dark .category-container .page-nav a,.dark .tag-container .article-nav a,.dark .tag-container .page-nav a {
  color: #bbb;
}

.dark .archive-container .article-nav a:hover,.dark .archive-container .page-nav a:hover,.dark .article .article-nav a:hover,.dark .article .page-nav a:hover,.dark .category-container .article-nav a:hover,.dark .category-container .page-nav a:hover,.dark .tag-container .article-nav a:hover,.dark .tag-container .page-nav a:hover {
  color: #fff;
}

.dark .archive-container .article-entry blockquote footer strong,.dark .archive-container .article-meta a,.dark .article .article-entry blockquote footer strong,.dark .article .article-meta a,.dark .category-container .article-entry blockquote footer strong,.dark .category-container .article-meta a,.dark .tag-container .article-entry blockquote footer strong,.dark .tag-container .article-meta a {
  color: #bbb;
}

.dark blockquote {
  color: #aaa;
}

.dark b,.dark h1,.dark h2,.dark h3,.dark h4,.dark h5,.dark h6,.dark strong {
  color: #ddd;
}

.dark .typo em,.dark .typo-em,.dark caption,.dark legend {
  color: #bbb;
}

.dark .typo table caption,.dark .typo table td,.dark .typo-table td {
  border: 1px solid #ddd;
  color: #aaa;
}

.dark .article-entry .highlight,.dark .article-entry pre {
  color: #d8d8d8;
  background-color: #333;
}

.dark .article-entry .highlight table caption,.dark .article-entry .highlight table td,.dark .article-entry .highlight td {
  border: 0;
}

.dark .article-entry .highlight .line.marked {
  background: #444;
}

.article-entry .highlight,.article-entry pre {
  padding: 1em;
  background: #f3f5f6;
  color: #4d4d4c;
  font-size: .9em;
  overflow: auto;
  line-height: 1.8;
}

.article-entry .highlight .gutter pre {
  color: #aeb4b9;
  font-size: .9em;
}

.article-entry figure.highlight {
  margin: 0;
}

.article-entry pre code {
  background: 0 0;
  text-shadow: none;
  padding: 0;
}

.article-entry .highlight pre {
  border: 0;
  margin: 0;
  padding: 0;
}

.article-entry .highlight table {
  margin: 0;
  width: 100%;
}

.article-entry .highlight td {
  border: 0;
  padding: 0;
}

.article-entry .highlight figcaption {
  color: #8e908c;
}

.article-entry .highlight figcaption a {
  float: right;
}

.article-entry .highlight .line {
  height: 25px;
}

.article-entry .highlight .line.marked {
  background: #e6e6e6;
}

pre .comment,pre .title {
  color: #8e908c;
}

pre .attribute,pre .css .class,pre .css .id,pre .css .pseudo,pre .html .doctype,pre .regexp,pre .ruby .constant,pre .tag,pre .variable,pre .xml .doctype,pre .xml .pi,pre .xml .tag .title {
  color: #c82829;
}

pre .built_in,pre .constant,pre .literal,pre .number,pre .params,pre .preprocessor {
  color: #f5871f;
}

pre .class,pre .css .rules .attribute,pre .header,pre .inheritance,pre .ruby .class .title,pre .ruby .symbol,pre .string,pre .value,pre .xml .cdata {
  color: #718c00;
}

pre .css .hexcolor {
  color: #3e999f;
}

pre .coffeescript .title,pre .function,pre .javascript .title,pre .perl .sub,pre .python .decorator,pre .python .title,pre .ruby .function .title,pre .ruby .title .keyword {
  color: #4271ae;
}

pre .javascript .function,pre .keyword {
  color: #8959a8;
}

@media (max-width:768px) {
  body {
    font-size: 1.2em;
  }

  .archive-container,.archive-footer,.article,.home .content,.post-footer {
    width: 80%;
  }

  .archive-container,.category-container,.tag-container {
    padding-top: 1em;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .comments {
    width: 80%;
  }

  .nav-left {
    position: relative;
    left: auto;
    text-align: initial;
  }

  .nav-left .main-nav-link {
    display: inline-block;
    padding-bottom: 5px;
  }

  .header-hr-left {
    display: block;
  }
}

@media (max-width:468px) {
  body {
    font-size: 1em;
  }

  .home {
    color: #222;
  }

  .home a {
    color: #111;
  }

  .archive-container .archive-footer,.archive-container .post-footer {
    padding: 1em;
  }

  .archive-container .archive-article-header>a,.archive-container .archive-article-header>h1 {
    width: 100%;
  }

  .mobile-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .main-nav {
    display: none;
    position: absolute;
    background-color: #fff;
    width: 50%;
    padding: 20px;
    border: 2px solid #777;
    box-shadow: 5px 5px 5px #777;
  }

  .main-nav .main-nav-link {
    display: block;
    padding-bottom: 10px;
  }

  .article .nav-left {
    position: absolute;
  }

  .article .nav-left .main-nav-link {
    display: block;
    padding-bottom: 10px;
  }
}

@media (max-width:320px) {
  body {
    font-size: .9em;
  }

  .article {
    font-size: 1em;
  }

  .archive-container .archive-footer,.archive-container .post-footer {
    padding: 1em;
  }

  .footer,.footer-content {
    font-size: .9em;
  }
}

.copy-button {
  cursor: pointer;
  border: 1px solid #d5d5d5;
  border-radius: 3px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-appearance: none;
  font-size: .8em;
  font-weight: 700;
  line-height: 1em;
  font-family: monospace,monospace;
  transition: opacity .3s ease-in-out;
  padding: 2px;
  opacity: 0;
}

.highlight:hover .copy-button {
  opacity: 1;
}