diff --git a/package.json b/package.json
index 6c8c695..4aababc 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,6 @@
     "renovate": "renovate --token $BOT_TOKEN --platform 'gitlab' --onboarding false --update-lock-files false --labels 'renovate' --recreate-closed true --require-config false curben/blog"
   },
   "dependencies": {
-    "autoprefixer": "^9.6.1",
     "hexo": "hexojs/hexo",
     "hexo-filter-nofollow": "hexojs/hexo-filter-nofollow",
     "hexo-generator-archive": "hexojs/hexo-generator-archive",
@@ -19,9 +18,7 @@
     "hexo-generator-tag": "hexojs/hexo-generator-tag",
     "hexo-renderer-ejs": "hexojs/hexo-renderer-ejs",
     "hexo-renderer-marked": "hexojs/hexo-renderer-marked",
-    "hexo-yam": "curbengh/hexo-yam",
-    "postcss-normalize": "^9.0.0",
-    "sanitize.css": "^11.0.0"
+    "hexo-yam": "curbengh/hexo-yam"
   },
   "devDependencies": {
     "hexo-server": "hexojs/hexo-server"
diff --git a/themes/chameleon/.npmrc b/themes/chameleon/.npmrc
new file mode 100644
index 0000000..77171bd
--- /dev/null
+++ b/themes/chameleon/.npmrc
@@ -0,0 +1,2 @@
+package-lock=false
+optional=false
diff --git a/themes/chameleon/README.md b/themes/chameleon/README.md
index c40383b..0aed967 100644
--- a/themes/chameleon/README.md
+++ b/themes/chameleon/README.md
@@ -29,3 +29,12 @@ theme_config:
   # Load forkawesome icons?
   icons: false
 ```
+
+## Build
+
+Build "source/css/_source.css" into "source/css/chameleon.css"
+
+```
+$ npm install
+$ npm run build
+```
diff --git a/themes/chameleon/build/script.js b/themes/chameleon/build/script.js
new file mode 100644
index 0000000..92108fd
--- /dev/null
+++ b/themes/chameleon/build/script.js
@@ -0,0 +1,33 @@
+'use strict'
+
+/*
+* Normalize chameleon.css using sanitize.css
+* Add browser prefixes using autoprefixer
+*/
+
+const { readFile, writeFile } = require('fs').promises
+const { join, resolve } = require('path')
+
+const deps = ['autoprefixer', 'postcss', 'postcss-normalize']
+deps.forEach((dep) => {
+  try {
+    require.resolve(dep)
+  } catch (err) {
+    console.error(`Missing "${dep}" dependency. Please install it by running "npm install ${dep}".`)
+  }
+})
+
+const autoprefixer = require('autoprefixer')
+const normalize = require('postcss-normalize')
+const postcss = require('postcss')
+
+const build = async () => {
+  const cssPath = resolve(__dirname, '../source/css/')
+  const cssSource = join(cssPath, '_source.css')
+  const cssSave = join(cssPath, 'chameleon.css')
+  const inCss = await readFile(cssSource)
+  const { css: outCss } = await postcss([normalize, autoprefixer]).process(inCss, { from: cssSource })
+  await writeFile(cssSave, outCss)
+}
+
+build()
diff --git a/themes/chameleon/package.json b/themes/chameleon/package.json
new file mode 100644
index 0000000..5b542b8
--- /dev/null
+++ b/themes/chameleon/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "hexo-theme-chameleon",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "build": "node build/script.js"
+  },
+  "devDependencies": {
+    "autoprefixer": "^9.6.1",
+    "postcss-normalize": "^9.0.0",
+    "sanitize.css": "^11.0.0"
+  },
+  "engines": {
+    "node": ">= 10.17.0"
+  }
+}
diff --git a/themes/chameleon/scripts/cssFilter.js b/themes/chameleon/scripts/cssFilter.js
deleted file mode 100644
index de0dab5..0000000
--- a/themes/chameleon/scripts/cssFilter.js
+++ /dev/null
@@ -1,32 +0,0 @@
-'use strict'
-/* global hexo */
-
-/*
-* Normalize typing.css using sanitize.css
-* Add browser prefixes using autoprefixer
-*
-* renderer is used (instead of filter) due to
-* incompatible with hexo-yam
-*/
-
-const deps = ['autoprefixer', 'postcss', 'postcss-normalize']
-deps.forEach(dep => {
-  try {
-    require.resolve(dep)
-  } catch (err) {
-    throw new Error(`Missing "${dep}" dependency. Please install it by running "npm install ${dep}".`)
-  }
-})
-
-const autoprefixer = require('autoprefixer')
-const normalize = require('postcss-normalize')
-const postcss = require('postcss')
-
-hexo.extend.renderer.register('css', 'css', async (data) => {
-  if (data.path) {
-    if (data.path.endsWith('.min.css')) return data.text
-  }
-
-  const result = await postcss([normalize, autoprefixer]).process(data.text, { from: data.path })
-  return result.css
-})
diff --git a/themes/chameleon/source/css/_source.css b/themes/chameleon/source/css/_source.css
new file mode 100644
index 0000000..f1dfaf8
--- /dev/null
+++ b/themes/chameleon/source/css/_source.css
@@ -0,0 +1,939 @@
+@charset "utf-8";
+@import "sanitize";
+@import "sanitize/forms";
+
+:root {
+  --main-bg-color: black;
+  --main-font-color: #e6e6e6;
+  --link-hover: white;
+  --alt-bg-color: #333;
+  --font-size: 1.2em;
+  --link-underline: #3d73b0;
+}
+
+html {
+  cursor: unset;
+  height: 100%;
+  line-height: 1.15;
+}
+
+body {
+  color: var(--main-font-color);
+  background: var(--main-bg-color);
+  font-family: sans-serif;
+  font-size: var(--font-size);
+  /* https://stackoverflow.com/a/6654996 */
+  min-height: 100%;
+  line-height: 1.5;
+}
+
+/*
+ * Restrict sizing to the page width in all browsers (opinionated).
+ * sanitize/page
+ */
+iframe,
+img,
+input,
+select,
+textarea {
+  height: auto;
+  max-width: 100%;
+}
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  font-family: serif;
+  font-weight: bold;
+  line-height: 1.35;
+  margin-top: 1em;
+  margin-bottom: 0.5em;
+}
+
+h1 {
+  font-size: 1.5em;
+  margin: 0.5em 0;
+}
+
+/* Disable line break for site title */
+h1.site-title {
+  white-space: nowrap;
+}
+
+h2 {
+  font-size: 1.3em;
+}
+
+h3 {
+  font-size: 1.2em;
+}
+
+h4 {
+  font-size: 1.1em;
+}
+
+a {
+  color: inherit;
+  cursor: pointer;
+}
+
+a:active,
+a:hover {
+  outline-width: 0;
+  color: var(--link-hover);
+}
+
+a,
+a:hover {
+  text-decoration: none;
+}
+
+button,
+input,
+select,
+textarea {
+  font-size: 100%;
+  line-height: 1.15;
+}
+
+hr {
+  background-image: -webkit-linear-gradient(0deg,transparent,var(--main-font-color),transparent);
+  border: none;
+  box-sizing: content-box;
+  height: 1px;
+  margin-bottom: 1em;
+  margin-left: 25%;
+  overflow: visible;
+  width: 50%;
+}
+
+.archive-container hr,
+.article hr {
+  width: 100%;
+  margin-left: 0;
+}
+
+.article .article-footer,
+.article .article-footer hr {
+  margin-top: 1em;
+}
+
+.header-hr {
+  background-image: -webkit-linear-gradient(90deg,var(--main-font-color),var(--main-font-color),transparent);
+}
+
+figcaption,
+small {
+  font-size: 0.9em;
+  color: #888;
+}
+
+figcaption {
+  margin-bottom: 0.5em;
+}
+
+pre figcaption a {
+  float: right;
+}
+
+dl,
+form,
+hr,
+ol,
+p,
+pre,
+table,
+ul,
+blockquote {
+  margin-bottom: 1em;
+}
+
+ul {
+  margin-left: 1.3em;
+  list-style: disc;
+}
+
+ul.index-list {
+  margin-left: unset;
+  list-style: disc;
+}
+
+ol {
+  list-style: decimal;
+  margin-left: 1.9em;
+}
+
+ol.toc,
+ol.toc-child {
+  list-style: disc;
+  margin-left: unset;
+}
+
+li ol,
+li ul,
+ol,
+ul {
+  margin-bottom: 0.8em;
+  margin-left: 2em;
+}
+
+li ul,
+ul {
+  list-style: disc;
+}
+
+table caption,
+table td,
+table th,
+td,
+th {
+  border: 1px solid #ddd;
+  padding: 0.5em 1em;
+}
+
+table th,
+th,
+table tr:nth-child(even),
+tr:nth-child(even) {
+  background: var(--alt-bg-color);
+}
+
+em,
+caption,
+legend {
+  font-weight: inherit;
+}
+
+code,
+kbd,
+pre,
+samp {
+  font-size: 0.9em;
+}
+
+/* set codeblock width to minimum */
+pre {
+  border-left: 0.1em solid var(--link-underline);
+  padding-left: 1em;
+  max-width: max-content;
+}
+
+mark {
+  background: var(--alt-bg-color);
+}
+
+/* Hide post's excerpt in article */
+.p-summary {
+  display: none;
+}
+
+.main-nav-link {
+  margin-right: 0.5em;
+  padding-bottom: 0.5em;
+  display: inline-block;
+  border: 0;
+}
+
+b,
+strong {
+  font-weight: 700;
+}
+
+blockquote {
+  background: var(--alt-bg-color);
+  border-left: 0.1em solid #666;
+  padding-left: 1em;
+  margin: 1em 3em 1em 0em;
+  max-width: max-content;
+}
+
+.page-nav {
+  margin-top: 2em;
+  text-align: center;
+}
+
+.footer {
+  box-sizing: border-box;
+}
+
+.container {
+  width: 100%;
+}
+
+.copyright,
+.footer-content,
+.footer-links {
+  text-align: center;
+  font-size: 0.95em;
+  max-width: 80ch;
+  padding: 0 2ch;
+  margin: auto;
+}
+
+.copyright li,
+.footer-content li,
+.footer-links li {
+  display: inline-block;
+}
+
+.footer-content {
+  margin: 0 auto;
+  text-align: left;
+}
+
+.footer-links {
+  font-size: 0.9em;
+  padding: 0;
+}
+
+.footer-links a {
+  text-decoration: none;
+}
+
+.footer-links li {
+  margin-right: 1em;
+}
+
+/* Wrap count in brackets */
+span.index-list-count:before {
+  content: ' (';
+}
+
+span.index-list-count:after {
+  content: ')';
+}
+
+/* align badge in /about/ */
+.about-body .article .article-entry img.svg {
+  /* display same line */
+  display: inline;
+  /* align to the left */
+  margin: auto 0 .5em;
+}
+
+/* https://jrl.ninja/etc/1/ */
+.archive-container {
+  position: relative;
+  font-size: 1em;
+  max-width: 80ch;
+  padding: 2ch;
+  margin: auto;
+}
+
+.archive-container article {
+  margin-bottom: 1em;
+  line-height: 1em;
+}
+
+.archive-container a,
+.archive-container a:hover {
+  border: 0;
+}
+
+.archive-container .header,
+.article .header {
+  font-size: 1.1em;
+}
+
+.archive-container .archive-article-header > a,
+.archive-container .archive-article-header > h1 {
+  vertical-align: middle;
+}
+
+.archive-container .archive-article-header h1 {
+  font-size: 1.2em;
+  margin: 0;
+}
+
+.archive-container .archive-article-date {
+  font-size: 0.8em;
+}
+
+.archive-container .extend,
+.archive-container .page-number {
+  margin-right: 1em;
+}
+
+.article {
+  max-width: 80ch;
+  padding: 2ch;
+  margin: auto;
+  position: relative;
+}
+
+.article .main-nav-link:hover {
+  border: 0;
+}
+
+.article .caption {
+  display: block;
+  text-align: center;
+}
+
+.article .article-entry {
+  word-break: break-word;
+}
+
+.article .article-entry a {
+  border-bottom: 1px solid var(--link-underline);
+}
+
+.article .article-entry a:hover {
+  border-bottom: none;
+}
+
+.article .article-entry img {
+  display: block;
+  margin: auto;
+  margin-bottom: 0.5em;
+  max-height: 30em;
+}
+
+.article .article-entry blockquote footer {
+  text-align: center;
+  font-size: 80%;
+}
+
+.article .article-entry blockquote footer cite {
+  font-style: italic;
+}
+
+.article .article-entry blockquote footer cite a {
+  border-bottom: 1px solid #eee;
+}
+
+.article .article-entry blockquote footer cite:before {
+  content: "—";
+  padding: 0 0.5em;
+}
+
+.article .article-entry blockquote footer strong {
+  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: 1em;
+  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;
+  padding: 0 1em;
+  width: 49%;
+  box-sizing: border-box;
+  vertical-align: top;
+  border: 0;
+}
+
+.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-meta {
+  font-size: 0.9em;
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+.article .article-meta .label {
+  margin-right: 0.5em;
+}
+
+.article .article-meta .article-category,
+.article .article-meta .article-tag-list {
+  display: inline-block;
+  margin: 0;
+  padding: 0;
+}
+
+.article .article-meta .article-tag-list-item {
+  display: inline-block;
+  margin-right: 1em;
+}
+
+.article .article-meta .article-tag-list-item:before {
+  content: "#";
+}
+
+.article .article-gallery img {
+  width: 100%;
+}
+
+.article-type-page .article-footer {
+  display: none;
+}
+
+table caption,
+table td,
+td {
+  border: 1px solid #ddd;
+}
+
+/*
+ * Visual Studio 2015 dark style
+ * Author: Nicolas LLOBERA <nllobera@gmail.com>
+ * https://github.com/highlightjs/highlight.js/blob/master/src/styles/vs2015.css
+ */
+
+ .hljs {
+  display: block;
+  overflow-x: auto;
+  /* padding: 0.5em;
+  background: #1E1E1E;
+  color: #DCDCDC; */
+}
+
+.hljs-keyword,
+.hljs-literal,
+.hljs-symbol,
+.hljs-name {
+  color: #569CD6;
+}
+.hljs-link {
+  color: #569CD6;
+  text-decoration: underline;
+}
+
+.hljs-built_in,
+.hljs-type {
+  color: #4EC9B0;
+}
+
+.hljs-number,
+.hljs-class {
+  color: #B8D7A3;
+}
+
+.hljs-string,
+.hljs-meta-string {
+  color: #D69D85;
+}
+
+.hljs-regexp,
+.hljs-template-tag {
+  color: #9A5334;
+}
+
+.hljs-subst,
+.hljs-function,
+.hljs-title,
+.hljs-params,
+.hljs-formula {
+  color: #DCDCDC;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #57A64A;
+  font-style: italic;
+}
+
+.hljs-doctag {
+  color: #608B4E;
+}
+
+.hljs-meta,
+.hljs-meta-keyword,
+.hljs-tag {
+  color: #9B9B9B;
+}
+
+.hljs-variable,
+.hljs-template-variable {
+  color: #BD63C5;
+}
+
+.hljs-attr,
+.hljs-attribute,
+.hljs-builtin-name {
+  color: #9CDCFE;
+}
+
+.hljs-section {
+  color: gold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+/*.hljs-code {
+  font-family:'Monospace';
+}*/
+
+.hljs-bullet,
+.hljs-selector-tag,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #D7BA7D;
+}
+
+.hljs-addition {
+  background-color: #144212;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #600;
+  display: inline-block;
+  width: 100%;
+}
+
+/* hide mobile nav menu and its checkbox */
+/* when it's not mobile */
+.mobile-nav,
+#mobile-menu-toggle,
+#mobile-nav-link {
+  display: none;
+}
+
+/* set line-height in /archives page */
+.mobile-nav-menu {
+  line-height: 1.8;
+}
+
+/* overlap other elements */
+#mobile-nav-link {
+  background: var(--main-bg-color);
+  color: var(--main-font-color);
+  border: 2px solid #999;
+  border-radius: 5px;
+  right: 0;
+  margin-left: 5px;
+  padding: 0.5em;
+  position: absolute;
+}
+
+.mobile-nav-link-a {
+  text-align: center;
+}
+
+#menu-button {
+  font-size: 2em;
+}
+
+/* search bar */
+.search-container {
+  border-radius: 5px;
+  width: 10em;
+  background: var(--alt-bg-color);
+  outline: 0;
+  float: right;
+  height: 1.8em;
+  position: relative;
+  margin: auto;
+}
+
+/* inline-block to position them in same line */
+.search-box,
+.search-button{
+  display:inline-block;
+}
+
+/* hide the border and fill the height to parent's */
+.search-box {
+  border: 0;
+  border-radius: 5px;
+  height:1.8em;
+  width: 85%;
+  padding-left: 0.2em;
+  box-sizing: border-box;
+}
+
+/*
+ * Override sanitize/forms
+ * to prevent conflict with
+ * .search-box padding-left
+ */
+input {
+  padding: 0;
+}
+
+/* highlight the text box when focused */
+.search-box:focus {
+  border: 1px solid var(--link-underline);
+}
+
+/* align the button to center */
+.search-button {
+  width: 10%;
+  position: absolute;
+  top: 45%;
+  transform: translate(30%, -50%);
+}
+
+/* fill the svg with parent's font color */
+svg {
+  fill: currentColor;
+}
+
+/* don't underline specific <a> tag */
+.no-underline {
+  border-bottom: none;
+}
+
+/* fill the search, permalink and share icons with link's color */
+svg#search,
+svg#link,
+svg#share {
+  fill: var(--link-underline);
+}
+
+/* use font color when hover */
+svg#search:hover,
+svg#link:hover,
+svg#share:hover {
+  fill: currentColor;
+}
+
+/* hide share button by default
+unhide (via JS) if Web Share API is supported */
+.article-title a#share-button {
+  display: none;
+}
+
+.article .article-entry a.headerlink svg,
+.article-title a#share-button svg {
+  height: 0.75em;
+}
+
+/* don't underline permalink and share icons */
+.article .article-entry a.headerlink,
+.article-title a#share-button {
+  border-bottom: none;
+  margin-left: 0.5em;
+}
+
+/* underline permalink and share icons when hover */
+.article .article-entry a.headerlink:hover,
+.article-title a#share-button:hover {
+  border-bottom: 1px solid var(--link-underline);
+}
+
+@media (max-width: 768px) {
+  body {
+    font-size: 1.2em;
+  }
+
+  .article-title {
+    font-size: 1.8rem;
+  }
+
+  /* hide desktop nav */
+  .main-nav {
+    display: none;
+  }
+
+  /* display mobile nav */
+  .mobile-nav {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    /* reduce height of mobile header */
+    height: 1.5em;
+  }
+
+  /* display links when menu button is clicked */
+  /* use grid to display each link in new line */
+  #mobile-menu-toggle:checked + #mobile-nav-link {
+    display: grid;
+  }
+}
+
+@media (max-width: 468px) {
+  :root {
+    --font-size: 1em;
+  }
+
+  .archive-container .archive-footer,
+  .archive-container .post-footer {
+    padding: 1em;
+  }
+
+  .archive-container .archive-article-header > a,
+  .archive-container .archive-article-header > h1 {
+    width: 100%;
+  }
+}
+
+@media (max-width: 320px) {
+  :root {
+    --font-size: 0.9em;
+  }
+
+  .article {
+    font-size: 1em;
+  }
+
+  .archive-container .archive-footer,
+  .archive-container .post-footer {
+    padding: 1em;
+  }
+
+  .footer,
+  .footer-content {
+    font-size: 0.9em;
+  }
+}
+
+.copy-button {
+  border: 1px solid #999;
+  border-radius: 5px;
+  cursor: pointer;
+  font-size: 0.8em;
+  line-height: 1em;
+  margin-top: 1em;
+  padding: 5px;
+  user-select: none;
+}
+
+.copy-button:hover {
+  background: var(--main-font-color);
+  color: var(--main-bg-color);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --main-bg-color: black;
+    --main-font-color: #e6e6e6;
+    --link-hover: white;
+    --alt-bg-color: #333;
+  }
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    --main-bg-color: #f1f1f1;
+    --main-font-color: #333;
+    --link-hover: black;
+    --alt-bg-color: #d8d8d8;
+  }
+
+  /*
+  * Visual Studio-like style based on original C# coloring
+  * Author:  Jason Diamond <jason@diamond.name>
+  * https://github.com/highlightjs/highlight.js/blob/master/src/styles/vs.css
+  */
+
+  .hljs {
+    display: block;
+    overflow-x: auto;
+    /* padding: 0.5em;
+    background: white;
+    color: black; */
+  }
+
+  .hljs-comment,
+  .hljs-quote,
+  .hljs-variable {
+    color: #008000;
+  }
+
+  .hljs-keyword,
+  .hljs-selector-tag,
+  .hljs-built_in,
+  .hljs-name,
+  .hljs-tag {
+    color: #00f;
+  }
+
+  .hljs-string,
+  .hljs-title,
+  .hljs-section,
+  .hljs-attribute,
+  .hljs-literal,
+  .hljs-template-tag,
+  .hljs-template-variable,
+  .hljs-type,
+  .hljs-addition {
+    color: #a31515;
+  }
+
+  .hljs-deletion,
+  .hljs-selector-attr,
+  .hljs-selector-pseudo,
+  .hljs-meta {
+    color: #2b91af;
+  }
+
+  .hljs-doctag {
+    color: #808080;
+  }
+
+  .hljs-attr {
+    color: #f00;
+  }
+
+  .hljs-symbol,
+  .hljs-bullet,
+  .hljs-link {
+    color: #00b0e8;
+  }
+
+
+  .hljs-emphasis {
+    font-style: italic;
+  }
+
+  .hljs-strong {
+    font-weight: bold;
+  }
+}
diff --git a/themes/chameleon/source/css/chameleon.css b/themes/chameleon/source/css/chameleon.css
index 0146d3c..a60fbb0 100644
--- a/themes/chameleon/source/css/chameleon.css
+++ b/themes/chameleon/source/css/chameleon.css
@@ -1,7 +1,451 @@
 @charset "utf-8";
-/* Require postcss-normalize */
-@import "sanitize";
-@import "sanitize/forms";
+/* Document
+ * ========================================================================== */
+/**
+ * Add border box sizing in all browsers (opinionated).
+ */
+*,
+::before,
+::after {
+  box-sizing: border-box;
+}
+/**
+ * 1. Add text decoration inheritance in all browsers (opinionated).
+ * 2. Add vertical alignment inheritance in all browsers (opinionated).
+ */
+::before,
+::after {
+  text-decoration: inherit; /* 1 */
+  vertical-align: inherit; /* 2 */
+}
+/**
+ * 1. Use the default cursor in all browsers (opinionated).
+ * 2. Change the line height in all browsers (opinionated).
+ * 3. Use a 4-space tab width in all browsers (opinionated).
+ * 4. Remove the grey highlight on links in iOS (opinionated).
+ * 5. Prevent adjustments of font size after orientation changes in
+ *    IE on Windows Phone and in iOS.
+ * 6. Breaks words to prevent overflow in all browsers (opinionated).
+ */
+html {
+  cursor: default; /* 1 */
+  line-height: 1.5; /* 2 */
+  -moz-tab-size: 4; /* 3 */
+  -o-tab-size: 4;
+     tab-size: 4; /* 3 */
+  -webkit-tap-highlight-color: transparent /* 4 */;
+  -ms-text-size-adjust: 100%; /* 5 */
+  -webkit-text-size-adjust: 100%; /* 5 */
+  word-break: break-word; /* 6 */
+}
+/* Sections
+ * ========================================================================== */
+/**
+ * Remove the margin in all browsers (opinionated).
+ */
+body {
+  margin: 0;
+}
+/**
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Edge, Firefox, and Safari.
+ */
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+/* Grouping content
+ * ========================================================================== */
+/**
+ * Remove the margin on nested lists in Chrome, Edge, IE, and Safari.
+ */
+dl dl,
+dl ol,
+dl ul,
+ol dl,
+ul dl {
+  margin: 0;
+}
+/**
+ * Remove the margin on nested lists in Edge 18- and IE.
+ */
+ol ol,
+ol ul,
+ul ol,
+ul ul {
+  margin: 0;
+}
+/**
+ * 1. Add the correct sizing in Firefox.
+ * 2. Show the overflow in Edge 18- and IE.
+ */
+hr {
+  height: 0; /* 1 */
+  overflow: visible; /* 2 */
+}
+/**
+ * Add the correct display in IE.
+ */
+main {
+  display: block;
+}
+/**
+ * Remove the list style on navigation lists in all browsers (opinionated).
+ */
+nav ol,
+nav ul {
+  list-style: none;
+  padding: 0;
+}
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+pre {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+/* Text-level semantics
+ * ========================================================================== */
+/**
+ * Add the correct text decoration in Edge 18-, IE, and Safari.
+ */
+abbr[title] {
+  text-decoration: underline;
+  -webkit-text-decoration: underline dotted;
+          text-decoration: underline dotted;
+}
+/**
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+b,
+strong {
+  font-weight: bolder;
+}
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+code,
+kbd,
+samp {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+/**
+ * Add the correct font size in all browsers.
+ */
+small {
+  font-size: 80%;
+}
+/* Embedded content
+ * ========================================================================== */
+/*
+ * Change the alignment on media elements in all browsers (opinionated).
+ */
+audio,
+canvas,
+iframe,
+img,
+svg,
+video {
+  vertical-align: middle;
+}
+/**
+ * Remove the border on iframes in all browsers (opinionated).
+ */
+iframe {
+  border-style: none;
+}
+/**
+ * Change the fill color to match the text color in all browsers (opinionated).
+ */
+svg:not([fill]) {
+  fill: currentColor;
+}
+/**
+ * Hide the overflow in IE.
+ */
+svg:not(:root) {
+  overflow: hidden;
+}
+/* Tabular data
+ * ========================================================================== */
+/**
+ * Collapse border spacing in all browsers (opinionated).
+ */
+table {
+  border-collapse: collapse;
+}
+/* Forms
+ * ========================================================================== */
+/**
+ * Remove the margin on controls in Safari.
+ */
+button,
+input,
+select {
+  margin: 0;
+}
+/**
+ * 1. Show the overflow in IE.
+ * 2. Remove the inheritance of text transform in Edge 18-, Firefox, and IE.
+ */
+button {
+  overflow: visible; /* 1 */
+  text-transform: none; /* 2 */
+}
+/**
+ * Correct the inability to style buttons in iOS and Safari.
+ */
+button,
+[type="button"],
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button;
+}
+/**
+ * 1. Change the inconsistent appearance in all browsers (opinionated).
+ * 2. Correct the padding in Firefox.
+ */
+fieldset {
+  border: 1px solid #a0a0a0; /* 1 */
+  padding: 0.35em 0.75em 0.625em; /* 2 */
+}
+/**
+ * Show the overflow in Edge 18- and IE.
+ */
+input {
+  overflow: visible;
+}
+/**
+ * 1. Correct the text wrapping in Edge 18- and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ */
+legend {
+  color: inherit; /* 2 */
+  display: table; /* 1 */
+  max-width: 100%; /* 1 */
+  white-space: normal; /* 1 */
+}
+/**
+ * 1. Add the correct display in Edge 18- and IE.
+ * 2. Add the correct vertical alignment in Chrome, Edge, and Firefox.
+ */
+progress {
+  display: inline-block; /* 1 */
+  vertical-align: baseline; /* 2 */
+}
+/**
+ * Remove the inheritance of text transform in Firefox.
+ */
+select {
+  text-transform: none;
+}
+/**
+ * 1. Remove the margin in Firefox and Safari.
+ * 2. Remove the default vertical scrollbar in IE.
+ * 3. Change the resize direction in all browsers (opinionated).
+ */
+textarea {
+  margin: 0; /* 1 */
+  overflow: auto; /* 2 */
+  resize: vertical; /* 3 */
+}
+/**
+ * 1. Correct the odd appearance in Chrome, Edge, and Safari.
+ * 2. Correct the outline style in Safari.
+ */
+[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  outline-offset: -2px; /* 2 */
+}
+/**
+ * Correct the cursor style of increment and decrement buttons in Safari.
+ */
+::-webkit-inner-spin-button,
+::-webkit-outer-spin-button {
+  height: auto;
+}
+/**
+ * Correct the text style of placeholders in Chrome, Edge, and Safari.
+ */
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: 0.54;
+}
+/**
+ * Remove the inner padding in Chrome, Edge, and Safari on macOS.
+ */
+::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+/**
+ * 1. Correct the inability to style upload buttons in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+::-webkit-file-upload-button {
+  -webkit-appearance: button; /* 1 */
+  font: inherit; /* 2 */
+}
+/**
+ * Remove the inner border and padding of focus outlines in Firefox.
+ */
+::-moz-focus-inner {
+  border-style: none;
+  padding: 0;
+}
+/**
+ * Restore the focus outline styles unset by the previous rule in Firefox.
+ */
+:-moz-focusring {
+  outline: 1px dotted ButtonText;
+}
+/**
+ * Remove the additional :invalid styles in Firefox.
+ */
+:-moz-ui-invalid {
+  box-shadow: none;
+}
+/* Interactive
+ * ========================================================================== */
+/*
+ * Add the correct display in Edge 18- and IE.
+ */
+details {
+  display: block;
+}
+/*
+ * Add the correct styles in Edge 18-, IE, and Safari.
+ */
+dialog {
+  background-color: white;
+  border: solid;
+  color: black;
+  display: block;
+  height: -moz-fit-content;
+  height: -webkit-fit-content;
+  height: fit-content;
+  left: 0;
+  margin: auto;
+  padding: 1em;
+  position: absolute;
+  right: 0;
+  width: -moz-fit-content;
+  width: -webkit-fit-content;
+  width: fit-content;
+}
+dialog:not([open]) {
+  display: none;
+}
+/*
+ * Add the correct display in all browsers.
+ */
+summary {
+  display: list-item;
+}
+/* Scripting
+ * ========================================================================== */
+/**
+ * Add the correct display in IE.
+ */
+template {
+  display: none;
+}
+/* User interaction
+ * ========================================================================== */
+/*
+ * 1. Remove the tapping delay in IE 10.
+ * 2. Remove the tapping delay on clickable elements
+      in all browsers (opinionated).
+ */
+a,
+area,
+button,
+input,
+label,
+select,
+summary,
+textarea,
+[tabindex] { /* 1 */
+  touch-action: manipulation; /* 2 */
+}
+/* Accessibility
+ * ========================================================================== */
+/**
+ * Change the cursor on busy elements in all browsers (opinionated).
+ */
+[aria-busy="true"] {
+  cursor: progress;
+}
+/*
+ * Change the cursor on control elements in all browsers (opinionated).
+ */
+[aria-controls] {
+  cursor: pointer;
+}
+/*
+ * Change the cursor on disabled, not-editable, or otherwise
+ * inoperable elements in all browsers (opinionated).
+ */
+[aria-disabled="true"],
+[disabled] {
+  cursor: not-allowed;
+}
+/*
+ * Change the display on visually hidden accessible elements
+ * in all browsers (opinionated).
+ */
+[aria-hidden="false"][hidden] {
+  display: initial;
+}
+[aria-hidden="false"][hidden]:not(:focus) {
+  clip: rect(0, 0, 0, 0);
+  position: absolute;
+}
+/**
+ * 1. Change the inconsistent appearance in all browsers (opinionated).
+ * 2. Add typography inheritance in all browsers (opinionated).
+ */
+button,
+input,
+select,
+textarea {
+  background-color: transparent; /* 1 */
+  border: 1px solid WindowFrame; /* 1 */
+  color: inherit; /* 1 */
+  font: inherit; /* 2 */
+  letter-spacing: inherit; /* 2 */
+  padding: 0.25em 0.375em; /* 1 */
+}
+/**
+ * Change the inconsistent appearance in all browsers (opinionated).
+ */
+select {
+  -moz-appearance: none;
+  -webkit-appearance: none;
+  background: no-repeat right center / 1em;
+  border-radius: 0;
+  padding-right: 1em;
+}
+/**
+ * Change the inconsistent appearance in all browsers (opinionated).
+ */
+select:not([multiple]):not([size]) {
+  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='4'%3E%3Cpath d='M4 0h6L7 4'/%3E%3C/svg%3E");
+}
+/**
+ * Change the inconsistent appearance in IE (opinionated).
+ */
+::-ms-expand {
+  display: none;
+}
+/**
+ * Correct the inconsistent appearance in IE (opinionated).
+ */
+:-ms-input-placeholder {
+  color: rgba(0, 0, 0, 0.54);
+}
 
 :root {
   --main-bg-color: black;
@@ -219,6 +663,8 @@ samp {
 pre {
   border-left: 0.1em solid var(--link-underline);
   padding-left: 1em;
+  max-width: -webkit-max-content;
+  max-width: -moz-max-content;
   max-width: max-content;
 }
 
@@ -248,6 +694,8 @@ blockquote {
   border-left: 0.1em solid #666;
   padding-left: 1em;
   margin: 1em 3em 1em 0em;
+  max-width: -webkit-max-content;
+  max-width: -moz-max-content;
   max-width: max-content;
 }
 
@@ -843,7 +1291,10 @@ unhide (via JS) if Web Share API is supported */
   line-height: 1em;
   margin-top: 1em;
   padding: 5px;
-  user-select: none;
+  -webkit-user-select: none;
+     -moz-user-select: none;
+      -ms-user-select: none;
+          user-select: none;
 }
 
 .copy-button:hover {