diff --git a/code/404.html b/code/404.html
deleted file mode 100644
index a836dc6..0000000
--- a/code/404.html
+++ /dev/null
@@ -1,13 +0,0 @@
----
-title: "Page Not Found"
-section: "code"
-tags: "code"
-description: "The page you are looking for does not exist."
-layout: base.njk
-permalink: /code/404.html
----
-<div class="error-page">
-  <h1>404</h1>
-  <p>The page you are looking for does not exist or has been moved.</p>
-  <a class="back-link" href="/">← Back to code</a>
-</div>
\ No newline at end of file
diff --git a/hub/404.html b/hub/404.html
index 65a7ba4..c7ebf87 100644
--- a/hub/404.html
+++ b/hub/404.html
@@ -9,5 +9,5 @@ permalink: /404.html
 <div class="error-page">
   <h1>404</h1>
   <p>The page you are looking for does not exist or has been moved.</p>
-  <a class="back-link" href="/">← Back to hub</a>
+  <a class="back-link" href="/">← Back to home</a>
 </div>
\ No newline at end of file
diff --git a/infra/404.html b/infra/404.html
deleted file mode 100644
index a914d70..0000000
--- a/infra/404.html
+++ /dev/null
@@ -1,13 +0,0 @@
----
-title: "Page Not Found"
-section: "infra"
-tags: "infra"
-description: "The page you are looking for does not exist."
-layout: base.njk
-permalink: /infra/404.html
----
-<div class="error-page">
-  <h1>404</h1>
-  <p>The page you are looking for does not exist or has been moved.</p>
-  <a class="back-link" href="/">← Back to infra</a>
-</div>
\ No newline at end of file
diff --git a/retro/404.html b/retro/404.html
deleted file mode 100644
index 8a321b7..0000000
--- a/retro/404.html
+++ /dev/null
@@ -1,13 +0,0 @@
----
-title: "Page Not Found"
-section: "retro"
-tags: "retro"
-description: "The page you are looking for does not exist."
-layout: base.njk
-permalink: /retro/404.html
----
-<div class="error-page">
-  <h1>404</h1>
-  <p>The page you are looking for does not exist or has been moved.</p>
-  <a class="back-link" href="/">← Back to retro</a>
-</div>
\ No newline at end of file
diff --git a/smarthome/404.html b/smarthome/404.html
deleted file mode 100644
index 0c27623..0000000
--- a/smarthome/404.html
+++ /dev/null
@@ -1,13 +0,0 @@
----
-title: "Page Not Found"
-section: "smarthome"
-tags: "smarthome"
-description: "The page you are looking for does not exist."
-layout: base.njk
-permalink: /smarthome/404.html
----
-<div class="error-page">
-  <h1>404</h1>
-  <p>The page you are looking for does not exist or has been moved.</p>
-  <a class="back-link" href="/">← Back to smarthome</a>
-</div>
\ No newline at end of file
diff --git a/stefankoelle/pdf/cv.pdf b/stefankoelle/pdf/cv.pdf
index 4fa8c8d..367bddf 100644
Binary files a/stefankoelle/pdf/cv.pdf and b/stefankoelle/pdf/cv.pdf differ