diff --git a/mon-entreprise/source/site/entry.en.tsx b/mon-entreprise/source/site/entry.en.tsx
index e357a387d..6ea80221e 100644
--- a/mon-entreprise/source/site/entry.en.tsx
+++ b/mon-entreprise/source/site/entry.en.tsx
@@ -1,7 +1,3 @@
-// We disable Speedy mode for Styled-Component in production because it created a bug for overlay appearance
-// https://stackoverflow.com/questions/53486470/react-styled-components-stripped-out-from-production-build
-global.SC_DISABLE_SPEEDY = true
-
 import 'core-js/stable'
 import { hot } from 'react-hot-loader/root'
 import { render } from 'react-dom'
diff --git a/mon-entreprise/source/site/entry.fr.tsx b/mon-entreprise/source/site/entry.fr.tsx
index 496b24d28..dc8daf1d0 100644
--- a/mon-entreprise/source/site/entry.fr.tsx
+++ b/mon-entreprise/source/site/entry.fr.tsx
@@ -1,7 +1,3 @@
-// We disable Speedy mode for Styled-Component in production because it created a bug for overlay appearance
-// https://stackoverflow.com/questions/53486470/react-styled-components-stripped-out-from-production-build
-global.SC_DISABLE_SPEEDY = true
-
 import { hot } from 'react-hot-loader/root'
 import 'core-js/stable'
 import 'react-hot-loader'
diff --git a/mon-entreprise/webpack.prod.js b/mon-entreprise/webpack.prod.js
index 2dc4f3b48..c843137f3 100644
--- a/mon-entreprise/webpack.prod.js
+++ b/mon-entreprise/webpack.prod.js
@@ -30,11 +30,11 @@ const prerenderConfig = () => ({
 		$('#outdated-browser').after(`
 			<style>
 				#js {
+					animation: appear 0.5s;
 					opacity: 1;
-					transform: translateY(0px);
 				}
 				#loading {
-					display: none;
+					display: none !important;
 				}
 			</style>
 		`)