diff --git a/styles/index.css b/styles/index.css
new file mode 100644
index 0000000..c66a314
--- /dev/null
+++ b/styles/index.css
@@ -0,0 +1,14 @@
+/* Fix header navigation overflow in Frankfurt theme */
+header .flex-1 {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  min-width: 0;
+}
+
+header .flex-1 > div:first-child {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: 0.75rem;
+}