diff --git a/frontend/vendor/datetime.css b/frontend/vendor/datetime.css
index e7b724943..7c1172da1 100644
--- a/frontend/vendor/datetime.css
+++ b/frontend/vendor/datetime.css
@@ -23,7 +23,7 @@
     height: auto;
     margin: 15px;
     padding: 0;
-    z-index: 3000;
+    z-index: 15;
     display: block;
     position: absolute;
     visibility: hidden;