diff --git a/code/03-using-css-animations/src/components/Modal/Modal.css b/code/03-using-css-animations/src/components/Modal/Modal.css
index eacf239c3d..2696a57d06 100644
--- a/code/03-using-css-animations/src/components/Modal/Modal.css
+++ b/code/03-using-css-animations/src/components/Modal/Modal.css
@@ -19,6 +19,7 @@
 
 .ModalClosed {
     animation: closeModal 0.4s ease-out forwards;
+    z-index: -100;
 }
 
 @keyframes openModal {
@@ -49,4 +50,4 @@
         opacity: 0;
         transform: translateY(-100%);
     }
-}
\ No newline at end of file
+}