--- a/about.md	Thu Jul 09 17:51:40 2020 +0900
+++ b/about.md	Thu Jul 09 23:00:55 2020 +0900
@@ -34,7 +34,7 @@
 and by reporting any problems you may have.
 
 
-# History
+## History
 
 Octave was originally conceived (in about 1988) to be companion software for an
 undergraduate-level textbook on chemical reactor design being written by James

--- a/download.md	Thu Jul 09 17:51:40 2020 +0900
+++ b/download.md	Thu Jul 09 23:00:55 2020 +0900
@@ -65,12 +65,14 @@
 <a id="ms-windows">
 ### Microsoft Windows
 
-<div data-alert class="alert-box info radius">
+<div class="primary callout small" data-closable>
 <b>Note:</b> All installers below bundle several <b>Octave Forge packages</b>
 so they don't have to be installed separately.
 After installation type <code>pkg list</code> to list them.
 <a href="{{ site.wiki_url }}/Octave_for_Microsoft_Windows">Read more.</a>
-<a href="#" class="close">&times;</a>
+<a class="close-button" aria-label="Dismiss alert" type="button" data-close>
+  <span aria-hidden="true">&times;</span>
+</a>
 </div>
 
 - Windows-64 (recommended)

--- a/support-expectations.md	Thu Jul 09 17:51:40 2020 +0900
+++ b/support-expectations.md	Thu Jul 09 23:00:55 2020 +0900
@@ -24,7 +24,7 @@
 You should also not be surprised when your requests for help are ignored.
 
 
-# Development Group
+### Development Group
 
 People sometimes think that Octave is developed by some large team of well-paid
 programmers.
@@ -49,7 +49,7 @@
 time.
 
 
-# Help
+### Help
 
 When asking for help on Discourse or IRC channel,
 or reporting a bug,
@@ -61,7 +61,7 @@
 Be precise about the problems you are having.
 
 
-# Bugs
+### Bugs
 
 No software is perfect,
 and Octave is no exception.
@@ -80,7 +80,7 @@
 [commercial support]({{ "commercial-support.html" | relative_url }}).
 
 
-# Features
+### Features
 
 When we say that Octave is "mostly compatible" with Matlab,
 we mean that the language that it accepts is similar enough that a substantial

--- a/support.md	Thu Jul 09 17:51:40 2020 +0900
+++ b/support.md	Thu Jul 09 23:00:55 2020 +0900
@@ -4,33 +4,44 @@
 menu: true
 ---
 
-- Get [**commercial support**]({{ "commercial-support.html" | relative_url }})
-  - Setup assistance
-  - Custom feature implementation
+#### Contact the **user community**
 
-<p></p>
+<small>
+The Octave community is a loosely organized association of **volunteers**.
+Your interactions with the community will be better if you have the
+[right expectations about the support options]({{ "support-expectations.html" | relative_url }})
+available to you.
+</small>
 
-- Read the **GNU Octave Manual**
-  - [Web version]({{ site.docs_url }})
-  - [PDF version]({{ "octave.pdf" | relative_url }})
-  - Type `doc` inside Octave
+<div style="margin-left: 2em;" markdown="1">
+- [**Discourse**]({{ site.discourse_url }}) &mdash;
+  the main chat portal for Octave users and developers.
+- **IRC**: Chat with users and developers on the
+  [Freenode `{{ site.irc_channel }}` channel](https://webchat.freenode.net/#octave).
+- Browse the
+  [**mailing list archives**](https://lists.gnu.org/archive/html/help-octave/).
+</div>
 
-<p></p>
+
+#### Get [**commercial support**]({{ "commercial-support.html" | relative_url }})
 
-- Browse the [Octave Wiki]({{ site.wiki_url }})
-  - Read [Frequently Asked Questions (FAQ)]({{ site.faq_url }})
+<div style="margin-left: 2em;" markdown="1">
+- Setup assistance
+- Custom feature implementation
+</div>
 
-<p></p>
+
+#### Read the **GNU Octave Manual**
 
-- Contact the **user community**
-  > The Octave community is a loosely organized association of **volunteers**.
-  > Your interactions with the community will be better if you have the
-  > [right expectations about the support options]({{ "support-expectations.html" | relative_url }})
-  > available to you.
+<div style="margin-left: 2em;" markdown="1">
+- [Web version]({{ site.docs_url }})
+- [PDF version]({{ "octave.pdf" | relative_url }})
+- Type `doc` inside Octave
+</div>
 
-  - [**Discourse**]({{ site.discourse_url }}) &mdash;
-    the main chat portal for Octave users and developers.
-  - **IRC**: Chat with users and developers on the
-    [Freenode `{{ site.irc_channel }}` channel](https://webchat.freenode.net/#octave).
-  - Browse the
-    [**mailing list archives**](https://lists.gnu.org/archive/html/help-octave/).
+
+#### Browse the [Octave Wiki]({{ site.wiki_url }})
+
+<div style="margin-left: 2em;" markdown="1">
+- Read [Frequently Asked Questions (FAQ)]({{ site.faq_url }})
+</div>