diff --git a/app/ginga-ui.com/src/app/globals.css b/app/ginga-ui.com/src/app/globals.css
index 6215851..bc4f857 100644
--- a/app/ginga-ui.com/src/app/globals.css
+++ b/app/ginga-ui.com/src/app/globals.css
@@ -19,6 +19,9 @@ body {
 }
 
 .docs-header {
+  position: sticky;
+  top: 0;
+  z-index: 100;
   display: flex;
   align-items: center;
   justify-content: space-between;