mkdocs-material/docs/upgrade.md
2021-11-28 15:59:54 +01:00

58 KiB
Raw Blame History

template
overrides/main.html

How to upgrade

Upgrade to the latest version with:

pip install --upgrade mkdocs-material

Show the currently installed version with:

pip show mkdocs-material

Upgrading from 7.x to 8.x

What's new?

  • Added support for code annotations
  • Added support for anchor tracking
  • Added support for version warning
  • Added copyright partial for easier override
  • Removed deprecated content tabs legacy implementation
  • Removed deprecated seealso admonition type
  • Removed deprecated site_keywords setting (unsupported by MkDocs)
  • Removed deprecated prebuilt search index support
  • Removed deprecated web app manifest
  • Removed extracopyright variable
  • Removed Disqus integation in favor of overrides
  • Switched to :is() selectors for simple selector lists
  • Switched autoprefixer from last 4 years to last 2 years
  • Improved CSS overall to match modern standards
  • Improved CSS variable semantics for fonts
  • Improved extensibility by restructuring partials
  • Improved handling of details when printing
  • Improved keyboard navigation for footnotes
  • Fixed #3214: Search highlighting breaks site when empty

Changes to mkdocs.yml

pymdownx.tabbed

Support for the legacy style of the Tabbed extension was dropped in favor of the new, alternate implementation which has better behavior on mobile viewports:

=== "8.x"

``` yaml
markdown_extensions:
  - pymdownx.tabbed:
      alternate_style: true 
```

=== "7.x"

``` yaml
markdown_extensions:
  - pymdownx.tabbed
```

Upgrading from 6.x to 7.x

What's new?

  • Added support for deploying multiple versions
  • Added support for integrating a language selector
  • Added support for rendering admonitions as inline blocks
  • Rewrite of the underlying reactive architecture
  • Removed Webpack in favor of reactive build strategy (480 dependencies)
  • Fixed keyboard navigation for code blocks after content tabs switch

Changes to mkdocs.yml

extra.version.method

The versioning method configuration was renamed to extra.version.provider to allow for different versioning strategies in the future:

=== "7.x"

``` yaml
extra:
  version:
    provider: mike
```

=== "6.x"

``` yaml
extra:
  version:
    method: mike
```

Changes to *.html files { data-search-exclude }

The templates have undergone a set of changes to make them future-proof. If you've used theme extension to override a block or template, make sure that it matches the new structure:

  • If you've overridden a block, check base.html for potential changes
  • If you've overridden a template, check the respective *.html file for potential changes

=== ":octicons-file-code-16: base.html"

``` diff
@@ -61,7 +61,7 @@
            font.text | replace(' ', '+') + ':300,400,400i,700%7C' +
            font.code | replace(' ', '+')
          }}&display=fallback">
-        <style>body,input{font-family:"{{ font.text }}",-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"{{ font.code }}",SFMono-Regular,Consolas,Menlo,monospace}</style>
+        <style>:root{--md-text-font-family:"{{ font.text }}";--md-code-font-family:"{{ font.code }}"}</style>
      {% endif %}
    {% endblock %}
    {% if config.extra.manifest %}
@@ -131,7 +131,7 @@
              {% if page and page.meta and page.meta.hide %}
                {% set hidden = "hidden" if "navigation" in page.meta.hide %}
              {% endif %}
-              <div class="md-sidebar md-sidebar--primary" data-md-component="navigation" {{ hidden }}>
+              <div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" {{ hidden }}>
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    {% include "partials/nav.html" %}
@@ -143,7 +143,7 @@
              {% if page and page.meta and page.meta.hide %}
                {% set hidden = "hidden" if "toc" in page.meta.hide %}
              {% endif %}
-              <div class="md-sidebar md-sidebar--secondary" data-md-component="toc" {{ hidden }}>
+              <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" {{ hidden }}>
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    {% include "partials/toc.html" %}
@@ -152,7 +152,7 @@
              </div>
            {% endif %}
          {% endblock %}
-          <div class="md-content">
+          <div class="md-content" data-md-component="content">
            <article class="md-content__inner md-typeset">
              {% block content %}
                {% if page.edit_url %}
@@ -183,10 +183,18 @@
        {% include "partials/footer.html" %}
      {% endblock %}
    </div>
-    {% block scripts %}
-      <script src="{{ 'assets/javascripts/vendor.18f0862e.min.js' | url }}"></script>
-      <script src="{{ 'assets/javascripts/bundle.994580cf.min.js' | url }}"></script>
-      {%- set translations = {} -%}
+    <div class="md-dialog" data-md-component="dialog">
+      <div class="md-dialog__inner md-typeset"></div>
+    </div>
+    {% block config %}
+      {%- set app = {
+        "base": base_url,
+        "features": features,
+        "translations": {},
+        "search": "assets/javascripts/workers/search.217ffd95.min.js" | url,
+        "version": config.extra.version or None
+      } -%}
+      {%- set translations = app.translations -%}
      {%- for key in [
        "clipboard.copy",
        "clipboard.copied",
@@ -204,19 +212,12 @@
      ] -%}
        {%- set _ = translations.update({ key: lang.t(key) }) -%}
      {%- endfor -%}
-      <script id="__lang" type="application/json">
-        {{- translations | tojson -}}
-      </script>
-      {% block config %}{% endblock %}
-      <script>
-        app = initialize({
-          base: "{{ base_url }}",
-          features: {{ features or [] | tojson }},
-          search: Object.assign({
-            worker: "{{ 'assets/javascripts/worker/search.9c0e82ba.min.js' | url }}"
-          }, typeof search !== "undefined" && search)
-        })
+      <script id="__config" type="application/json">
+        {{- app | tojson -}}
      </script>
+    {% endblock %}
+    {% block scripts %}
+      <script src="{{ 'assets/javascripts/bundle.926459b3.min.js' | url }}"></script>
      {% for path in config["extra_javascript"] %}
        <script src="{{ path | url }}"></script>
      {% endfor %}
```

=== ":octicons-file-code-16: partials/footer.html"

``` diff
-    <div class="md-footer-nav">
-      <nav class="md-footer-nav__inner md-grid" aria-label="{{ lang.t('footer.title') }}">
-        {% if page.previous_page %}
-          <a href="{{ page.previous_page.url | url }}" class="md-footer-nav__link md-footer-nav__link--prev" rel="prev">
-            <div class="md-footer-nav__button md-icon">
-              {% include ".icons/material/arrow-left.svg" %}
-            </div>
-            <div class="md-footer-nav__title">
-              <div class="md-ellipsis">
-                <span class="md-footer-nav__direction">
-                  {{ lang.t("footer.previous") }}
-                </span>
-                {{ page.previous_page.title }}
-              </div>
-            </div>
-          </a>
-        {% endif %}
-        {% if page.next_page %}
-          <a href="{{ page.next_page.url | url }}" class="md-footer-nav__link md-footer-nav__link--next" rel="next">
-            <div class="md-footer-nav__title">
-              <div class="md-ellipsis">
-                <span class="md-footer-nav__direction">
-                  {{ lang.t("footer.next") }}
-                </span>
-                {{ page.next_page.title }}
-              </div>
+    <nav class="md-footer__inner md-grid" aria-label="{{ lang.t('footer.title') }}">
+      {% if page.previous_page %}
+        <a href="{{ page.previous_page.url | url }}" class="md-footer__link md-footer__link--prev" rel="prev">
+          <div class="md-footer__button md-icon">
+            {% include ".icons/material/arrow-left.svg" %}
+          </div>
+          <div class="md-footer__title">
+            <div class="md-ellipsis">
+              <span class="md-footer__direction">
+                {{ lang.t("footer.previous") }}
+              </span>
+              {{ page.previous_page.title }}
            </div>
-            <div class="md-footer-nav__button md-icon">
-              {% include ".icons/material/arrow-right.svg" %}
+          </div>
+        </a>
+      {% endif %}
+      {% if page.next_page %}
+        <a href="{{ page.next_page.url | url }}" class="md-footer__link md-footer__link--next" rel="next">
+          <div class="md-footer__title">
+            <div class="md-ellipsis">
+              <span class="md-footer__direction">
+                {{ lang.t("footer.next") }}
+              </span>
+              {{ page.next_page.title }}
            </div>
-          </a>
-        {% endif %}
-      </nav>
-    </div>
+          </div>
+          <div class="md-footer__button md-icon">
+            {% include ".icons/material/arrow-right.svg" %}
+          </div>
+        </a>
+      {% endif %}
+    </nav>
  {% endif %}
  <div class="md-footer-meta md-typeset">
    <div class="md-footer-meta__inner md-grid">
```

=== ":octicons-file-code-16: partials/header.html"

``` diff
@@ -6,21 +6,21 @@
  {% set site_url = site_url ~ "/index.html" %}
{% endif %}
<header class="md-header" data-md-component="header">
-  <nav class="md-header-nav md-grid" aria-label="{{ lang.t('header.title') }}">
-    <a href="{{ site_url }}" title="{{ config.site_name | e }}" class="md-header-nav__button md-logo" aria-label="{{ config.site_name }}">
+  <nav class="md-header__inner md-grid" aria-label="{{ lang.t('header.title') }}">
+    <a href="{{ site_url }}" title="{{ config.site_name | e }}" class="md-header__button md-logo" aria-label="{{ config.site_name }}">
      {% include "partials/logo.html" %}
    </a>
-    <label class="md-header-nav__button md-icon" for="__drawer">
+    <label class="md-header__button md-icon" for="__drawer">
      {% include ".icons/material/menu" ~ ".svg" %}
    </label>
-    <div class="md-header-nav__title" data-md-component="header-title">
-      <div class="md-header-nav__ellipsis">
-        <div class="md-header-nav__topic">
+    <div class="md-header__title" data-md-component="header-title">
+      <div class="md-header__ellipsis">
+        <div class="md-header__topic">
          <span class="md-ellipsis">
            {{ config.site_name }}
          </span>
        </div>
-        <div class="md-header-nav__topic">
+        <div class="md-header__topic" data-md-component="header-topic">
          <span class="md-ellipsis">
            {% if page and page.meta and page.meta.title %}
              {{ page.meta.title }}
@@ -31,14 +31,35 @@
        </div>
      </div>
    </div>
+    <div class="md-header__options">
+      {% if config.extra.alternate %}
+        <div class="md-select">
+          {% set icon = config.theme.icon.alternate or "material/translate" %}
+          <span class="md-header__button md-icon">
+            {% include ".icons/" ~ icon ~ ".svg" %}
+          </span>
+          <div class="md-select__inner">
+            <ul class="md-select__list">
+              {% for alt in config.extra.alternate %}
+                <li class="md-select__item">
+                  <a href="{{ alt.link | url }}" class="md-select__link">
+                    {{ alt.name }}
+                  </a>
+                </li>
+                {% endfor %}
+            </ul>
+          </div>
+        </div>
+      {% endif %}
+    </div>
    {% if "search" in config["plugins"] %}
-      <label class="md-header-nav__button md-icon" for="__search">
+      <label class="md-header__button md-icon" for="__search">
        {% include ".icons/material/magnify.svg" %}
      </label>
      {% include "partials/search.html" %}
    {% endif %}
    {% if config.repo_url %}
-      <div class="md-header-nav__source">
+      <div class="md-header__source">
        {% include "partials/source.html" %}
      </div>
    {% endif %}

```

=== ":octicons-file-code-16: partials/source.html"

``` diff
@@ -4,5 +4,5 @@
{% import "partials/language.html" as lang with context %}
-<a href="{{ config.repo_url }}" title="{{ lang.t('source.link.title') }}" class="md-source">
+<a href="{{ config.repo_url }}" title="{{ lang.t('source.link.title') }}" class="md-source" data-md-component="source">
  <div class="md-source__icon md-icon">
    {% set icon = config.theme.icon.repo or "fontawesome/brands/git-alt" %}
    {% include ".icons/" ~ icon ~ ".svg" %}
```

=== ":octicons-file-code-16: partials/toc.html"

``` diff
@@ -12,7 +12,7 @@
      <span class="md-nav__icon md-icon"></span>
      {{ lang.t("toc.title") }}
    </label>
-    <ul class="md-nav__list" data-md-scrollfix>
+    <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
      {% for toc_item in toc %}
        {% include "partials/toc-item.html" %}
      {% endfor %}

```

Upgrading from 5.x to 6.x

What's new?

  • Improved search result look and feel
  • Improved search result stability while typing
  • Improved search result grouping (pages + headings)
  • Improved search result relevance and scoring
  • Added display of missing query terms to search results
  • Reduced size of vendor bundle by 25% (84kb → 67kb)
  • Reduced size of the Docker image to improve CI build performance
  • Removed hero partial in favor of custom implementation
  • Removed deprecated front matter features

Changes to mkdocs.yml

Following is a list of changes that need to be made to mkdocs.yml. Note that you only have to adjust the value if you defined it, so if your configuration does not contain the key, you can skip it.

theme.features

All feature flags that can be set from mkdocs.yml, like tabs and instant loading, are now prefixed with the name of the component or function they apply to, e.g. navigation.*:

=== "6.x"

``` yaml
theme:
  features:
    - navigation.tabs
    - navigation.instant
```

=== "5.x"

``` yaml
theme:
  features:
    - tabs
    - instant
```

Changes to *.html files { data-search-exclude }

The templates have undergone a set of changes to make them future-proof. If you've used theme extension to override a block or template, make sure that it matches the new structure:

  • If you've overridden a block, check base.html for potential changes
  • If you've overridden a template, check the respective *.html file for potential changes

=== ":octicons-file-code-16: base.html"

``` diff
@@ -22,13 +22,6 @@

{% import "partials/language.html" as lang with context %}

-<!-- Theme options -->
-{% set palette = config.theme.palette %}
-{% if not palette is mapping %}
-  {% set palette = palette | first %}
-{% endif %}
-{% set font = config.theme.font %}
-
<!doctype html>
<html lang="{{ lang.t('language') }}" class="no-js">
  <head>
@@ -45,21 +38,8 @@
        <meta name="description" content="{{ config.site_description }}" />
      {% endif %}

-      <!-- Redirect -->
-      {% if page and page.meta and page.meta.redirect %}
-        <script>
-          var anchor = window.location.hash.substr(1)
-          location.href = '{{ page.meta.redirect }}' +
-            (anchor ? '#' + anchor : '')
-        </script>
-
-        <!-- Fallback in case JavaScript is not available -->
-        <meta http-equiv="refresh" content="0; url={{ page.meta.redirect }}" />
-        <meta name="robots" content="noindex" />
-        <link rel="canonical" href="{{ page.meta.redirect }}" />
-
      <!-- Canonical -->
-      {% elif page.canonical_url %}
+      {% if page.canonical_url %}
        <link rel="canonical" href="{{ page.canonical_url }}" />
      {% endif %}

@@ -96,20 +76,21 @@
      <link rel="stylesheet" href="{{ 'assets/stylesheets/main.css' | url }}" />

      <!-- Extra color palette -->
-      {% if palette.scheme or palette.primary or palette.accent %}
+      {% if config.theme.palette %}
+        {% set palette = config.theme.palette %}
        <link
          rel="stylesheet"
          href="{{ 'assets/stylesheets/palette.css' | url }}"
        />
-      {% endif %}

-      <!-- Theme-color meta tag for Android -->
-      {% if palette.primary %}
-        {% import "partials/palette.html" as map %}
-        {% set primary = map.primary(
-          palette.primary | replace(" ", "-") | lower
-        ) %}
-        <meta name="theme-color" content="{{ primary }}" />
+        <!-- Theme-color meta tag for Android -->
+        {% if palette.primary %}
+          {% import "partials/palette.html" as map %}
+          {% set primary = map.primary(
+            palette.primary | replace(" ", "-") | lower
+          ) %}
+          <meta name="theme-color" content="{{ primary }}" />
+        {% endif %}
      {% endif %}
    {% endblock %}

@@ -120,7 +101,8 @@
    {% block fonts %}

      <!-- Load fonts from Google -->
-      {% if font != false %}
+      {% if config.theme.font != false %}
+        {% set font = config.theme.font %}
        <link href="https://fonts.gstatic.com" rel="preconnect" crossorigin />
        <link
          rel="stylesheet"
@@ -169,8 +151,12 @@

  <!-- Text direction and color palette, if defined -->
  {% set direction = config.theme.direction or lang.t('direction') %}
-  {% if palette.scheme or palette.primary or palette.accent %}
-    {% set scheme  = palette.scheme | lower %}
+  {% if config.theme.palette %}
+    {% set palette = config.theme.palette %}
+    {% if not palette is mapping %}
+      {% set palette = palette | first %}
+    {% endif %}
+    {% set scheme  = palette.scheme  | replace(" ", "-") | lower %}
    {% set primary = palette.primary | replace(" ", "-") | lower %}
    {% set accent  = palette.accent  | replace(" ", "-") | lower %}
    <body
@@ -179,18 +165,19 @@
      data-md-color-primary="{{ primary }}"
      data-md-color-accent="{{ accent }}"
    >
+
+      <!-- Experimental: set color scheme based on preference -->
+      {% if "preference" == scheme %}
+        <script>
+          if (matchMedia("(prefers-color-scheme: dark)").matches)
+            document.body.setAttribute("data-md-color-scheme", "slate")
+        </script>
+      {% endif %}
+
  {% else %}
    <body dir="{{ direction }}">
  {% endif %}

-    <!-- Experimental: set color scheme based on preference -->
-    {% if "preference" == palette.scheme %}
-      <script>
-        if (matchMedia("(prefers-color-scheme: dark)").matches)
-          document.body.setAttribute("data-md-color-scheme", "slate")
-      </script>
-    {% endif %}
-
    <!--
      State toggles - we need to set autocomplete="off" in order to reset the
      drawer on back button invocation in some browsers
@@ -243,15 +230,11 @@
    <div class="md-container" data-md-component="container">

      <!-- Hero teaser -->
-      {% block hero %}
-        {% if page and page.meta and page.meta.hero %}
-          {% include "partials/hero.html" with context %}
-        {% endif %}
-      {% endblock %}
+      {% block hero %}{% endblock %}

      <!-- Tabs navigation -->
      {% block tabs %}
-        {% if "tabs" in config.theme.features %}
+        {% if "navigation.tabs" in config.theme.features %}
          {% include "partials/tabs.html" %}
        {% endif %}
      {% endblock %}
@@ -310,13 +293,6 @@
                  </a>
                {% endif %}

-                <!-- Link to source file -->
-                {% block source %}
-                  {% if page and page.meta and page.meta.source %}
-                    {% include "partials/source-link.html" %}
-                  {% endif %}
-                {% endblock %}
-
                <!--
                  Hack: check whether the content contains a h1 headline. If it
                  doesn't, the page title (or respectively site name) is used
@@ -370,7 +346,10 @@
        "search.result.placeholder",
        "search.result.none",
        "search.result.one",
-        "search.result.other"
+        "search.result.other",
+        "search.result.more.one",
+        "search.result.more.other",
+        "search.result.term.missing"
      ] -%}
        {%- set _ = translations.update({ key: lang.t(key) }) -%}
      {%- endfor -%}
```

=== ":octicons-file-code-16: partials/hero.html"

``` diff
@@ -1,12 +0,0 @@
-{#-
-  This file was automatically generated - do not edit
--#}
-{% set class = "md-hero" %}
-{% if "tabs" not in config.theme.features %}
-  {% set class = "md-hero md-hero--expand" %}
-{% endif %}
-<div class="{{ class }}" data-md-component="hero">
-  <div class="md-hero__inner md-grid">
-    {{ page.meta.hero }}
-  </div>
-</div>
```

=== ":octicons-file-code-16: partials/source-link"

``` diff
-{#-
-  This file was automatically generated - do not edit
--#}
-{% import "partials/language.html" as lang with context %}
-{% set repo = config.repo_url %}
-{% if repo | last == "/" %}
-  {% set repo = repo[:-1] %}
-{% endif %}
-{% set path = page.meta.path | default("") %}
-<a href="{{ [repo, path, page.meta.source] | join('/') }}" title="{{ page.meta.source }}" class="md-content__button md-icon">
-  {{ lang.t("meta.source") }}
-  {% set icon = config.theme.icon.repo or "fontawesome/brands/git-alt" %}
-  {% include ".icons/" ~ icon ~ ".svg" %}
-</a>
```

Upgrading from 4.x to 5.x

What's new?

  • Reactive architecture try #!js app.dialog$.next("Hi!") in the console

  • Instant loading make Material behave like a Single Page Application

  • Improved CSS customization with CSS variables set your brand's colors

  • Improved CSS resilience, e.g. proper sidebar locking for customized headers

  • Improved icon integration and configuration now including over 5k icons

  • Added possibility to use any icon for logo, repository and social links

  • Search UI does not freeze anymore (moved to web worker)

  • Search index built only once when using instant loading

  • Improved extensible keyboard handling

  • Support for prebuilt search indexes

  • Support for displaying stars and forks for GitLab repositories

  • Support for scroll snapping of sidebars and search results

  • Reduced HTML and CSS footprint due to deprecation of Internet Explorer support

  • Slight facelifting of some UI elements (admonitions, tables, ...)

Changes to mkdocs.yml

Following is a list of changes that need to be made to mkdocs.yml. Note that you only have to adjust the value if you defined it, so if your configuration does not contain the key, you can skip it.

theme.feature

Optional features like tabs and instant loading are now implemented as flags and can be enabled by listing them in mkdocs.yml under theme.features:

=== "5.x"

``` yaml
theme:
  features:
    - tabs
    - instant
```

=== "4.x"

``` yaml
theme:
  feature:
    tabs: true
```

theme.logo.icon

The logo icon configuration was centralized under theme.icon.logo and can now be set to any of the icons bundled with the theme:

=== "5.x"

``` yaml
theme:
  icon:
    logo: material/cloud
```

=== "4.x"

``` yaml
theme:
  logo:
    icon: cloud
```

extra.repo_icon

The repo icon configuration was centralized under theme.icon.repo and can now be set to any of the icons bundled with the theme:

=== "5.x"

``` yaml
theme:
  icon:
    repo: fontawesome/brands/gitlab
```

=== "4.x"

``` yaml
extra:
  repo_icon: gitlab
```

extra.search.*

Search is now configured as part of the plugin options. Note that the search languages must now be listed as an array of strings and the tokenizer was renamed to separator:

=== "5.x"

``` yaml
plugins:
  - search:
      separator: '[\s\-\.]+'
      lang:
        - en
        - de
        - ru
```

=== "4.x"

``` yaml
extra:
  search:
    language: en, de, ru
    tokenizer: '[\s\-\.]+'
```

extra.social.*

Social links stayed in the same place, but the type key was renamed to icon in order to match the new way of specifying which icon to be used:

=== "5.x"

``` yaml
extra:
  social:
    - icon: fontawesome/brands/github-alt
      link: https://github.com/squidfunk
```

=== "4.x"

``` yaml
extra:
  social:
    - type: github
      link: https://github.com/squidfunk
```

Changes to *.html files { data-search-exclude }

The templates have undergone a set of changes to make them future-proof. If you've used theme extension to override a block or template, make sure that it matches the new structure:

  • If you've overridden a block, check base.html for potential changes
  • If you've overridden a template, check the respective *.html file for potential changes

=== ":octicons-file-code-16: base.html"

``` diff
@@ -2,7 +2,6 @@
  This file was automatically generated - do not edit
-#}
{% import "partials/language.html" as lang with context %}
-{% set feature = config.theme.feature %}
{% set palette = config.theme.palette %}
{% set font = config.theme.font %}
<!doctype html>
@@ -30,19 +29,6 @@
      {% elif config.site_author %}
        <meta name="author" content="{{ config.site_author }}">
      {% endif %}
-      {% for key in [
-        "clipboard.copy",
-        "clipboard.copied",
-        "search.language",
-        "search.pipeline.stopwords",
-        "search.pipeline.trimmer",
-        "search.result.none",
-        "search.result.one",
-        "search.result.other",
-        "search.tokenizer"
-      ] %}
-        <meta name="lang:{{ key }}" content="{{ lang.t(key) }}">
-      {% endfor %}
      <link rel="shortcut icon" href="{{ config.theme.favicon | url }}">
      <meta name="generator" content="mkdocs-{{ mkdocs_version }}, mkdocs-material-5.0.0">
    {% endblock %}
@@ -56,9 +42,9 @@
      {% endif %}
    {% endblock %}
    {% block styles %}
-      <link rel="stylesheet" href="{{ 'assets/stylesheets/application.********.css' | url }}">
+      <link rel="stylesheet" href="{{ 'assets/stylesheets/main.********.min.css' | url }}">
      {% if palette.primary or palette.accent %}
-        <link rel="stylesheet" href="{{ 'assets/stylesheets/application-palette.********.css' | url }}">
+        <link rel="stylesheet" href="{{ 'assets/stylesheets/palette.********.min.css' | url }}">
      {% endif %}
      {% if palette.primary %}
        {% import "partials/palette.html" as map %}
@@ -69,20 +55,17 @@
      {% endif %}
    {% endblock %}
    {% block libs %}
-      <script src="{{ 'assets/javascripts/modernizr.********.js' | url }}"></script>
    {% endblock %}
    {% block fonts %}
      {% if font != false %}
        <link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family={{
            font.text | replace(' ', '+') + ':300,400,400i,700%7C' +
            font.code | replace(' ', '+')
          }}&display=fallback">
        <style>body,input{font-family:"{{ font.text }}","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"{{ font.code }}","Courier New",Courier,monospace}</style>
      {% endif %}
    {% endblock %}
-    <link rel="stylesheet" href="{{ 'assets/fonts/material-icons.css' | url }}">
    {% if config.extra.manifest %}
      <link rel="manifest" href="{{ config.extra.manifest | url }}" crossorigin="use-credentials">
    {% endif %}
@@ -95,47 +77,50 @@
    {% endblock %}
    {% block extrahead %}{% endblock %}
  </head>
+  {% set direction = config.theme.direction | default(lang.t('direction')) %}
  {% if palette.primary or palette.accent %}
    {% set primary = palette.primary | replace(" ", "-") | lower %}
    {% set accent  = palette.accent  | replace(" ", "-") | lower %}
-    <body dir="{{ lang.t('direction') }}" data-md-color-primary="{{ primary }}" data-md-color-accent="{{ accent }}">
+    <body dir="{{ direction }}" data-md-color-primary="{{ primary }}" data-md-color-accent="{{ accent }}">
  {% else %}
-    <body dir="{{ lang.t('direction') }}">
+    <body dir="{{ direction }}">
  {% endif %}
-    <svg class="md-svg">
-      <defs>
-        {% set platform = config.extra.repo_icon or config.repo_url %}
-        {% if "github" in platform %}
-          {% include "assets/images/icons/github.f0b8504a.svg" %}
-        {% elif "gitlab" in platform %}
-          {% include "assets/images/icons/gitlab.6dd19c00.svg" %}
-        {% elif "bitbucket" in platform %}
-          {% include "assets/images/icons/bitbucket.1b09e088.svg" %}
-        {% endif %}
-      </defs>
-    </svg>
    <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
    <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
-    <label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
+    <label class="md-overlay" for="__drawer"></label>
+    <div data-md-component="skip">
+      {% if page.toc | first is defined %}
+        {% set skip = page.toc | first %}
+        <a href="{{ skip.url | url }}" class="md-skip">
+          {{ lang.t('skip.link.title') }}
+        </a>
+      {% endif %}
+    </div>
+    <div data-md-component="announce">
+      {% if self.announce() %}
+        <aside class="md-announce">
+          <div class="md-announce__inner md-grid md-typeset">
+            {% block announce %}{% endblock %}
+          </div>
+        </aside>
+      {% endif %}
+    </div>
    {% block header %}
      {% include "partials/header.html" %}
    {% endblock %}
-    <div class="md-container">
+    <div class="md-container" data-md-component="container">
      {% block hero %}
        {% if page and page.meta and page.meta.hero %}
          {% include "partials/hero.html" with context %}
        {% endif %}
      {% endblock %}
-      {% if feature.tabs %}
-        {% include "partials/tabs.html" %}
-      {% endif %}
+      {% block tabs %}
+        {% if "tabs" in config.theme.features %}
+          {% include "partials/tabs.html" %}
+        {% endif %}
+      {% endblock %}
-      <main class="md-main" role="main">
-        <div class="md-main__inner md-grid" data-md-component="container">
+      <main class="md-main" data-md-component="main">
+        <div class="md-main__inner md-grid">
          {% block site_nav %}
            {% if nav %}
              <div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
@@ -160,41 +141,25 @@
            <article class="md-content__inner md-typeset">
              {% block content %}
                {% if page.edit_url %}
-                  <a href="{{ page.edit_url }}" title="{{ lang.t('edit.link.title') }}" class="md-icon md-content__icon">&#xE3C9;</a>
+                  <a href="{{ page.edit_url }}" title="{{ lang.t('edit.link.title') }}" class="md-content__button md-icon">
+                    {% include ".icons/material/pencil.svg" %}
+                  </a>
                {% endif %}
+                {% block source %}
+                  {% if page and page.meta and page.meta.source %}
+                    {% include "partials/source-link.html" %}
+                  {% endif %}
+                {% endblock %}
                {% if not "\x3ch1" in page.content %}
                  <h1>{{ page.title | default(config.site_name, true)}}</h1>
                {% endif %}
                {{ page.content }}
-                {% block source %}
-                  {% if page and page.meta and page.meta.source %}
-                    <h2 id="__source">{{ lang.t("meta.source") }}</h2>
-                    {% set repo = config.repo_url %}
-                    {% if repo | last == "/" %}
-                      {% set repo = repo[:-1] %}
-                    {% endif %}
-                    {% set path = page.meta.path | default([""]) %}
-                    {% set file = page.meta.source %}
-                    <a href="{{ [repo, path, file] | join('/') }}" title="{{ file }}" class="md-source-file">
-                      {{ file }}
-                    </a>
-                  {% endif %}
-                {% endblock %}
+                {% if page and page.meta %}
+                  {% if page.meta.git_revision_date_localized or
+                        page.meta.revision_date
+                  %}
+                    {% include "partials/source-date.html" %}
-                {% if page and page.meta and (
-                      page.meta.git_revision_date_localized or
-                      page.meta.revision_date
-                ) %}
-                  {% set label = lang.t("source.revision.date") %}
-                  <hr>
-                  <div class="md-source-date">
-                    <small>
-                      {% if page.meta.git_revision_date_localized %}
-                        {{ label }}: {{ page.meta.git_revision_date_localized }}
-                      {% elif page.meta.revision_date %}
-                        {{ label }}: {{ page.meta.revision_date }}
-                      {% endif %}
-                    </small>
-                  </div>
                {% endif %}
              {% endblock %}
              {% block disqus %}
@@ -208,29 +174,35 @@
        {% include "partials/footer.html" %}
      {% endblock %}
    </div>
    {% block scripts %}
-      <script src="{{ 'assets/javascripts/application.********.js' | url }}"></script>
-      {% if lang.t("search.language") != "en" %}
-        {% set languages = lang.t("search.language").split(",") %}
-        {% if languages | length and languages[0] != "" %}
-          {% set path = "assets/javascripts/lunr/" %}
-          <script src="{{ (path ~ 'lunr.stemmer.support.js') | url }}"></script>
-          {% for language in languages | map("trim") %}
-            {% if language != "en" %}
-              {% if language == "ja" %}
-                <script src="{{ (path ~ 'tinyseg.js') | url }}"></script>
-              {% endif %}
-              {% if language in ("ar", "da", "de", "es", "fi", "fr", "hu", "it", "ja", "nl", "no", "pt", "ro", "ru", "sv", "th", "tr", "vi") %}
-                <script src="{{ (path ~ 'lunr.' ~ language ~ '.js') | url }}"></script>
-              {% endif %}
-            {% endif %}
-          {% endfor %}
-          {% if languages | length > 1 %}
-            <script src="{{ (path ~ 'lunr.multi.js') | url }}"></script>
-          {% endif %}
-        {% endif %}
-      {% endif %}
-      <script>app.initialize({version:"{{ mkdocs_version }}",url:{base:"{{ base_url }}"}})</script>
+      <script src="{{ 'assets/javascripts/vendor.********.min.js' | url }}"></script>
+      <script src="{{ 'assets/javascripts/bundle.********.min.js' | url }}"></script>
+      {%- set translations = {} -%}
+      {%- for key in [
+        "clipboard.copy",
+        "clipboard.copied",
+        "search.config.lang",
+        "search.config.pipeline",
+        "search.config.separator",
+        "search.result.placeholder",
+        "search.result.none",
+        "search.result.one",
+        "search.result.other"
+      ] -%}
+        {%- set _ = translations.update({ key: lang.t(key) }) -%}
+      {%- endfor -%}
+      <script id="__lang" type="application/json">
+        {{- translations | tojson -}}
+      </script>
+      {% block config %}{% endblock %}
+      <script>
+        app = initialize({
+          base: "{{ base_url }}",
+          features: {{ config.theme.features | tojson }},
+          search: Object.assign({
+            worker: "{{ 'assets/javascripts/worker/search.********.min.js' | url }}"
+          }, typeof search !== "undefined" && search)
+        })
+      </script>
      {% for path in config["extra_javascript"] %}
        <script src="{{ path | url }}"></script>
      {% endfor %}
```

=== ":octicons-file-code-16: partials/footer.html"

``` diff
@@ -5,34 +5,34 @@
    <div class="md-footer-nav">
-      <nav class="md-footer-nav__inner md-grid">
+      <nav class="md-footer-nav__inner md-grid" aria-label="{{ lang.t('footer.title') }}">
        {% if page.previous_page %}
-          <a href="{{ page.previous_page.url | url }}" title="{{ page.previous_page.title | striptags }}" class="md-flex md-footer-nav__link md-footer-nav__link--prev" rel="prev">
-            <div class="md-flex__cell md-flex__cell--shrink">
-              <i class="md-icon md-icon--arrow-back md-footer-nav__button"></i>
+          <a href="{{ page.previous_page.url | url }}" title="{{ page.previous_page.title | striptags }}" class="md-footer-nav__link md-footer-nav__link--prev" rel="prev">
+            <div class="md-footer-nav__button md-icon">
+              {% include ".icons/material/arrow-left.svg" %}
            </div>
-            <div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title">
-              <span class="md-flex__ellipsis">
+            <div class="md-footer-nav__title">
+              <div class="md-ellipsis">
                <span class="md-footer-nav__direction">
                  {{ lang.t("footer.previous") }}
                </span>
                {{ page.previous_page.title }}
-              </span>
+              </div>
            </div>
          </a>
        {% endif %}
        {% if page.next_page %}
-          <a href="{{ page.next_page.url | url }}" title="{{ page.next_page.title | striptags }}" class="md-flex md-footer-nav__link md-footer-nav__link--next" rel="next">
-            <div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title">
-              <span class="md-flex__ellipsis">
+          <a href="{{ page.next_page.url | url }}" title="{{ page.next_page.title | striptags }}" class="md-footer-nav__link md-footer-nav__link--next" rel="next">
+            <div class="md-footer-nav__title">
+              <div class="md-ellipsis">
                <span class="md-footer-nav__direction">
                  {{ lang.t("footer.next") }}
                </span>
                {{ page.next_page.title }}
-              </span>
+              </div>
            </div>
-            <div class="md-flex__cell md-flex__cell--shrink">
-              <i class="md-icon md-icon--arrow-forward md-footer-nav__button"></i>
+            <div class="md-footer-nav__button md-icon">
+              {% include ".icons/material/arrow-right.svg" %}
            </div>
          </a>
        {% endif %}
```

=== ":octicons-file-code-16: partials/header.html"

``` diff
@@ -2,51 +2,43 @@
  This file was automatically generated - do not edit
-#}
<header class="md-header" data-md-component="header">
-  <nav class="md-header-nav md-grid">
-    <div class="md-flex">
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }}" aria-label="{{ config.site_name }}" class="md-header-nav__button md-logo">
-          {% if config.theme.logo.icon %}
-            <i class="md-icon">{{ config.theme.logo.icon }}</i>
-          {% else %}
-            <img alt="logo" src="{{ config.theme.logo | url }}" width="24" height="24">
-          {% endif %}
-        </a>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
-      </div>
-      <div class="md-flex__cell md-flex__cell--stretch">
-        <div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
-          {% if config.site_name == page.title %}
-            {{ config.site_name }}
-          {% else %}
-            <span class="md-header-nav__topic">
-              {{ config.site_name }}
-            </span>
-            <span class="md-header-nav__topic">
-              {% if page and page.meta and page.meta.title %}
-                {{ page.meta.title }}
-              {% else %}
-                {{ page.title }}
-              {% endif %}
-            </span>
-          {% endif %}
+  <nav class="md-header-nav md-grid" aria-label="{{ lang.t('header.title') }}">
+    <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }}" class="md-header-nav__button md-logo" aria-label="{{ config.site_name }}">
+      {% include "partials/logo.html" %}
+    </a>
+    <label class="md-header-nav__button md-icon" for="__drawer">
+      {% include ".icons/material/menu" ~ ".svg" %}
+    </label>
+    <div class="md-header-nav__title" data-md-component="header-title">
+      {% if config.site_name == page.title %}
+        <div class="md-header-nav__ellipsis md-ellipsis">
+          {{ config.site_name }}
        </div>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        {% if "search" in config["plugins"] %}
-          <label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
-          {% include "partials/search.html" %}
-        {% endif %}
-      </div>
-      {% if config.repo_url %}
-        <div class="md-flex__cell md-flex__cell--shrink">
-          <div class="md-header-nav__source">
-            {% include "partials/source.html" %}
-          </div>
+      {% else %}
+        <div class="md-header-nav__ellipsis">
+          <span class="md-header-nav__topic md-ellipsis">
+            {{ config.site_name }}
+          </span>
+          <span class="md-header-nav__topic md-ellipsis">
+            {% if page and page.meta and page.meta.title %}
+              {{ page.meta.title }}
+            {% else %}
+              {{ page.title }}
+            {% endif %}
+          </span>
        </div>
      {% endif %}
    </div>
+    {% if "search" in config["plugins"] %}
+      <label class="md-header-nav__button md-icon" for="__search">
+        {% include ".icons/material/magnify.svg" %}
+      </label>
+      {% include "partials/search.html" %}
+    {% endif %}
+    {% if config.repo_url %}
+      <div class="md-header-nav__source">
+        {% include "partials/source.html" %}
+      </div>
+    {% endif %}
  </nav>
</header>
```

=== ":octicons-file-code-16: partials/hero.html"

``` diff
@@ -1,9 +1,8 @@
{#-
  This file was automatically generated - do not edit
-#}
-{% set feature = config.theme.feature %}
{% set class = "md-hero" %}
-{% if not feature.tabs %}
+{% if "tabs" not in config.theme.features %}
  {% set class = "md-hero md-hero--expand" %}
{% endif %}
<div class="{{ class }}" data-md-component="hero">
```

=== ":octicons-file-code-16: partials/language.html"

``` diff
@@ -3,12 +3,4 @@
-#}
{% import "partials/language/" + config.theme.language + ".html" as lang %}
{% import "partials/language/en.html" as fallback %}
-{% macro t(key) %}{{ {
-  "direction": config.theme.direction,
-  "search.language": (
-    config.extra.search | default({})
-  ).language,
-  "search.tokenizer": (
-    config.extra.search | default({})
-  ).tokenizer | default("", true),
-}[key] or lang.t(key) or fallback.t(key) }}{% endmacro %}
+{% macro t(key) %}{{ lang.t(key) | default(fallback.t(key)) }}{% endmacro %}
```

=== ":octicons-file-code-16: partials/logo.html"

``` diff
@@ -0,0 +1,9 @@
+{#-
+  This file was automatically generated - do not edit
+-#}
+{% if config.theme.logo %}
+  <img src="{{ config.theme.logo | url }}" alt="logo">
+{% else %}
+  {% set icon = config.theme.icon.logo or "material/library" %}
+  {% include ".icons/" ~ icon ~ ".svg" %}
+{% endif %}
```

=== ":octicons-file-code-16: partials/nav-item.html"

``` diff
@@ -14,9 +14,15 @@
    {% endif %}
    <label class="md-nav__link" for="{{ path }}">
      {{ nav_item.title }}
+      <span class="md-nav__icon md-icon">
+        {% include ".icons/material/chevron-right.svg" %}
+      </span>
    </label>
-    <nav class="md-nav" data-md-component="collapsible" data-md-level="{{ level }}">
+    <nav class="md-nav" aria-label="{{ nav_item.title }}" data-md-level="{{ level }}">
      <label class="md-nav__title" for="{{ path }}">
+        <span class="md-nav__icon md-icon">
+          {% include ".icons/material/arrow-left.svg" %}
+        </span>
        {{ nav_item.title }}
      </label>
      <ul class="md-nav__list" data-md-scrollfix>
@@ -39,6 +45,9 @@
    {% if toc | first is defined %}
      <label class="md-nav__link md-nav__link--active" for="__toc">
        {{ nav_item.title }}
+        <span class="md-nav__icon md-icon">
+          {% include ".icons/material/table-of-contents.svg" %}
+        </span>
      </label>
    {% endif %}
    <a href="{{ nav_item.url | url }}" title="{{ nav_item.title | striptags }}" class="md-nav__link md-nav__link--active">
```

=== ":octicons-file-code-16: partials/nav.html"

``` diff
@@ -1,14 +1,10 @@
{#-
  This file was automatically generated - do not edit
-#}
-<nav class="md-nav md-nav--primary" data-md-level="0">
-  <label class="md-nav__title md-nav__title--site" for="__drawer">
-    <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }}" class="md-nav__button md-logo">
-      {% if config.theme.logo.icon %}
-        <i class="md-icon">{{ config.theme.logo.icon }}</i>
-      {% else %}
-        <img alt="logo" src="{{ config.theme.logo | url }}" width="48" height="48">
-      {% endif %}
+<nav class="md-nav md-nav--primary" aria-label="{{ lang.t('nav.title') }}" data-md-level="0">
+  <label class="md-nav__title" for="__drawer">
+    <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }}" class="md-nav__button md-logo" aria-label="{{ config.site_name }}">
+      {% include "partials/logo.html" %}
    </a>
    {{ config.site_name }}
  </label>
```

=== ":octicons-file-code-16: partials/search.html"

``` diff
@@ -6,15 +6,18 @@
  <label class="md-search__overlay" for="__search"></label>
  <div class="md-search__inner" role="search">
    <form class="md-search__form" name="search">
-      <input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="{{ lang.t('search.placeholder') }}" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="query" data-md-state="active">
+      <input type="text" class="md-search__input" name="query" aria-label="{{ lang.t('search.placeholder') }}" placeholder="{{ lang.t('search.placeholder') }}" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" data-md-state="active">
      <label class="md-search__icon md-icon" for="__search">
+        {% include ".icons/material/magnify.svg" %}
+        {% include ".icons/material/arrow-left.svg" %}
      </label>
-      <button type="reset" class="md-icon md-search__icon" data-md-component="reset" tabindex="-1">
-        &#xE5CD;
+      <button type="reset" class="md-search__icon md-icon" aria-label="{{ lang.t('search.reset') }}" data-md-component="search-reset" tabindex="-1">
+        {% include ".icons/material/close.svg" %}
      </button>
    </form>
    <div class="md-search__output">
      <div class="md-search__scrollwrap" data-md-scrollfix>
-        <div class="md-search-result" data-md-component="result">
+        <div class="md-search-result" data-md-component="search-result">
          <div class="md-search-result__meta">
            {{ lang.t("search.result.placeholder") }}
          </div>
```

=== ":octicons-file-code-16: partials/social.html"

``` diff
@@ -3,9 +3,12 @@
-#}
{% if config.extra.social %}
  <div class="md-footer-social">
-    <link rel="stylesheet" href="{{ 'assets/fonts/font-awesome.css' | url }}">
    {% for social in config.extra.social %}
-      <a href="{{ social.link }}" target="_blank" rel="noopener" title="{{ social.type }}" class="md-footer-social__link fa fa-{{ social.type }}"></a>
+      {% set _,rest = social.link.split("//") %}
+      {% set domain = rest.split("/")[0] %}
+      <a href="{{ social.link }}" target="_blank" rel="noopener" title="{{ domain }}" class="md-footer-social__link">
+        {% include ".icons/" ~ social.icon ~ ".svg" %}
+      </a>
    {% endfor %}
  </div>
{% endif %}
```

=== ":octicons-file-code-16: partials/source-date.html"

``` diff
@@ -0,0 +1,15 @@
+{#-
+  This file was automatically generated - do not edit
+-#}
+{% import "partials/language.html" as lang with context %}
+{% set label = lang.t("source.revision.date") %}
+<hr>
+<div class="md-source-date">
+  <small>
+    {% if page.meta.git_revision_date_localized %}
+      {{ label }}: {{ page.meta.git_revision_date_localized }}
+    {% elif page.meta.revision_date %}
+      {{ label }}: {{ page.meta.revision_date }}
+    {% endif %}
+  </small>
+</div>
```

=== ":octicons-file-code-16: partials/source-link.html"

``` diff
@@ -0,0 +1,13 @@
+{#-
+  This file was automatically generated - do not edit
+-#}
+{% import "partials/language.html" as lang with context %}
+{% set repo = config.repo_url %}
+{% if repo | last == "/" %}
+  {% set repo = repo[:-1] %}
+{% endif %}
+{% set path = page.meta.path | default([""]) %}
+<a href="{{ [repo, path, page.meta.source] | join('/') }}" title="{{ file }}" class="md-content__button md-icon">
+  {{ lang.t("meta.source") }}
+  {% include ".icons/" ~ config.theme.icon.repo ~ ".svg" %}
+</a>
```

=== ":octicons-file-code-16: partials/source.html"

``` diff
@@ -2,24 +2,11 @@
  This file was automatically generated - do not edit
-#}
{% import "partials/language.html" as lang with context %}
-{% set platform = config.extra.repo_icon or config.repo_url %}
-{% if "github" in platform %}
-  {% set repo_type = "github" %}
-{% elif "gitlab" in platform %}
-  {% set repo_type = "gitlab" %}
-{% elif "bitbucket" in platform %}
-  {% set repo_type = "bitbucket" %}
-{% else %}
-  {% set repo_type = "" %}
-{% endif %}
-<a href="{{ config.repo_url }}" title="{{ lang.t('source.link.title') }}" class="md-source" data-md-source="{{ repo_type }}">
-  {% if repo_type %}
-    <div class="md-source__icon">
-      <svg viewBox="0 0 24 24" width="24" height="24">
-        <use xlink:href="#__{{ repo_type }}" width="24" height="24"></use>
-      </svg>
-    </div>
-  {% endif %}
+<a href="{{ config.repo_url }}" title="{{ lang.t('source.link.title') }}" class="md-source">
+  <div class="md-source__icon md-icon">
+    {% set icon = config.theme.icon.repo or "fontawesome/brands/git-alt" %}
+    {% include ".icons/" ~ icon ~ ".svg" %}
+  </div>
  <div class="md-source__repository">
    {{ config.repo_name }}
  </div>
```

=== ":octicons-file-code-16: partials/tabs-item.html"

``` diff
@@ -1,7 +1,7 @@
{#-
  This file was automatically generated - do not edit
-#}
-{% if nav_item.is_homepage %}
+{% if nav_item.is_homepage or nav_item.url == "index.html" %}
  <li class="md-tabs__item">
    {% if not page.ancestors | length and nav | selectattr("url", page.url) %}
      <a href="{{ nav_item.url | url }}" class="md-tabs__link md-tabs__link--active">
```

=== ":octicons-file-code-16: partials/tabs.html"

``` diff
@@ -5,7 +5,7 @@
{% if page.ancestors | length > 0 %}
  {% set class = "md-tabs md-tabs--active" %}
{% endif %}
-<nav class="{{ class }}" data-md-component="tabs">
+<nav class="{{ class }}" aria-label="{{ lang.t('tabs.title') }}" data-md-component="tabs">
  <div class="md-tabs__inner md-grid">
    <ul class="md-tabs__list">
      {% for nav_item in nav %}
```

=== ":octicons-file-code-16: partials/toc-item.html"

``` diff
@@ -6,7 +6,7 @@
    {{ toc_item.title }}
  </a>
  {% if toc_item.children %}
-    <nav class="md-nav">
+    <nav class="md-nav" aria-label="{{ toc_item.title }}">
      <ul class="md-nav__list">
        {% for toc_item in toc_item.children %}
          {% include "partials/toc-item.html" %}
```

=== ":octicons-file-code-16: partials/toc.html"

``` diff
@@ -2,35 +2,22 @@
  This file was automatically generated - do not edit
-#}
{% import "partials/language.html" as lang with context %}
-<nav class="md-nav md-nav--secondary">
+<nav class="md-nav md-nav--secondary" aria-label="{{ lang.t('toc.title') }}">
  {% endif %}
  {% if toc | first is defined %}
    <label class="md-nav__title" for="__toc">
+      <span class="md-nav__icon md-icon">
+        {% include ".icons/material/arrow-left.svg" %}
+      </span>
      {{ lang.t("toc.title") }}
    </label>
    <ul class="md-nav__list" data-md-scrollfix>
      {% for toc_item in toc %}
        {% include "partials/toc-item.html" %}
      {% endfor %}
-      {% if page.meta.source and page.meta.source | length > 0 %}
-        <li class="md-nav__item">
-          <a href="#__source" class="md-nav__link md-nav__link--active">
-            {{ lang.t("meta.source") }}
-          </a>
-        </li>
-      {% endif %}
-      {% set disqus = config.extra.disqus %}
-      {% if page and page.meta and page.meta.disqus is string %}
-        {% set disqus = page.meta.disqus %}
-      {% endif %}
-      {% if not page.is_homepage and disqus %}
-        <li class="md-nav__item">
-          <a href="#__comments" class="md-nav__link md-nav__link--active">
-            {{ lang.t("meta.comments") }}
-          </a>
-        </li>
-      {% endif %}
    </ul>
  {% endif %}
</nav>
```

Upgrading from 3.x to 4.x

What's new?

Material for MkDocs 4 fixes incorrect layout on Chinese systems. The fix includes a mandatory change of the base font-size from 10px to 20px which means all rem values needed to be updated. Within the theme, px to rem calculation is now encapsulated in a new function called px2rem which is part of the SASS code base.

If you use Material for MkDocs with custom CSS that is based on rem values, note that those values must now be divided by 2. Now, 1.0rem doesn't map to 10px, but 20px. To learn more about the problem and implications, please refer to #911 in which the problem was discovered and fixed.

Changes to mkdocs.yml

None.

Changes to *.html files

None.