diff --git a/build.sh b/build.sh
index 9189cbd..58e424b 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,6 @@
 #! /bin/sh
 
+rm -rf $(dirname $0)/public
 docker run \
   --rm -i \
   -v $(realpath $(dirname $0)):/src \
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index 6b60f71..7e80b44 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -24,7 +24,6 @@
 
     <main id="content">
       {{ block "main" . }}{{end}}
-      <p id="timestamp">Last modified: {{.Lastmod | time.Format "2006-Jan-02"}}</p>
     </main>
 
     <footer>
@@ -40,6 +39,7 @@
           <li><a href="mailto:neale@woozle.org">Email</a></li>
         </ul>
       </nav>
+      <p id="timestamp">Last modified: {{.Lastmod | time.Format "2006-Jan-02"}}</p>
     </footer>
 
   </body>
diff --git a/run.sh b/run.sh
index 7688fa6..5d78714 100755
--- a/run.sh
+++ b/run.sh
@@ -13,5 +13,6 @@ docker run \
   --rm -i \
   -v $(realpath $(dirname $0)):/src \
   -u $(id -u):$(id -g) \
+  -p 1313:1313 \
   klakegg/hugo:ext server \
     --baseURL "$baseURL"
diff --git a/static/assets/css/default.css b/static/assets/css/default.css
index bae2c5f..d308123 100644
--- a/static/assets/css/default.css
+++ b/static/assets/css/default.css
@@ -159,4 +159,13 @@ button.big {
     max-width: 60%;
   }
 }
+@media (prefers-color-scheme: dark) {
+  html {
+    background-image: url("../images/bg-dark.jpg");
+    filter: invert(1);
+  }
+  img {
+    filter: invert(1);
+  }
+}
 
diff --git a/static/assets/images/bg-dark.jpg b/static/assets/images/bg-dark.jpg
new file mode 100644
index 0000000..b9a7655
Binary files /dev/null and b/static/assets/images/bg-dark.jpg differ