diff --git a/_includes/coypu.md b/_includes/coypu.md
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--- a/_includes/coypu.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: "Coypu: programming music on-the-fly"
----
-Coypu is a Pharo package designed for programming music on-the-fly. It serves as a client that can connect to various audio engines, including [SuperDirt](https://github.com/musikinformatik/SuperDirt) / [SuperCollider](https://supercollider.github.io/), [Kyma](https://kyma.symbolicsound.com/), 
-[PureData](https://puredata.info/), and [Phausto](https://github.com/lucretiomsp/phausto), as well as external [MIDI](https://midi.org/) sound generators. Coypu is crafted to be user-friendly and easily extensible.
diff --git a/_includes/header.html b/_includes/header.html
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--- a/_includes/header.html
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-<header class="site-header">
-  <div class="wrapper">
-    <a class="site-title" rel="author" href="{{ "/" | relative_url }}">{{ site.title | escape }}</a>
-  </div>
-</header>
-
-<div class="sidebar">
-  <nav class="site-nav">
-    <input type="checkbox" id="nav-trigger" class="nav-trigger" />
-    <label for="nav-trigger">
-      <span class="menu-icon">
-        <svg viewBox="0 0 18 15" width="18px" height="15px">
-          <path d="M18,1.484c0,0.82-0.665,1.484-1.484,1.484H1.484C0.665,2.969,0,2.304,0,1.484l0,0C0,0.665,0.665,0,1.484,0 h15.032C17.335,0,18,0.665,18,1.484L18,1.484z M18,7.516C18,8.335,17.335,9,16.516,9H1.484C0.665,9,0,8.335,0,7.516l0,0 c0-0.82,0.665-1.484,1.484-1.484h15.032C17.335,6.031,18,6.696,18,7.516L18,7.516z M18,13.516C18,14.335,17.335,15,16.516,15H1.484 C0.665,15,0,14.335,0,13.516l0,0c0-0.82,0.665-1.483,1.484-1.483h15.032C17.335,12.031,18,12.695,18,13.516L18,13.516z"/>
-        </svg>
-      </span>
-    </label>
-
-    <div class="trigger">
-      {%- for path in page_paths -%}
-        {%- assign my_page = site.pages | where: "path", path | first -%}
-        {%- if my_page.title -%}
-        <a class="page-link" href="{{ my_page.url | relative_url }}">{{ my_page.title | escape }}</a>
-        {%- endif -%}
-      {%- endfor -%}
-    </div>
-  </nav>
-</div>