diff --git a/layouts/partials/custom-header.html b/layouts/partials/custom-header.html
new file mode 100644
index 0000000..4f3e251
--- /dev/null
+++ b/layouts/partials/custom-header.html
@@ -0,0 +1 @@
+<link rel="stylesheet" href="{{ relURL "css/menu.css" }}">
diff --git a/static/css/menu.css b/static/css/menu.css
new file mode 100644
index 0000000..3761e56
--- /dev/null
+++ b/static/css/menu.css
@@ -0,0 +1,6 @@
+/* Increase the margin a little bit such that it doesn't look too crowded
+ * on the menu side bar.
+ */
+#R-topics {
+  margin-left: 0.5em;
+}