diff --git a/_includes/head/custom.html b/_includes/head/custom.html
index 77ca5b7..b524595 100644
--- a/_includes/head/custom.html
+++ b/_includes/head/custom.html
@@ -1 +1,3 @@
-<div id="progress-bar"></div>
\ No newline at end of file
+<!-- start custom header snippets -->
+<div id="progress-bar"></div>
+<!-- end custom header snippets -->
\ No newline at end of file