diff --git a/addons/website/static/src/css/website.css b/addons/website/static/src/css/website.css
index 4ea0e6bd867..8389b725131 100644
--- a/addons/website/static/src/css/website.css
+++ b/addons/website/static/src/css/website.css
@@ -145,7 +145,6 @@ div#wrap .carousel {
 div#mobile-preview.modal {
   overflow: hidden;
   overflow-y: hidden;
-  background-color: whitesmoke;
 }
 
 ul.nav-stacked > li > a {
diff --git a/addons/website/static/src/css/website.sass b/addons/website/static/src/css/website.sass
index 936a34d0cfa..e9a5953f1b8 100644
--- a/addons/website/static/src/css/website.sass
+++ b/addons/website/static/src/css/website.sass
@@ -115,7 +115,6 @@ div#wrap
 div#mobile-preview.modal
     overflow: hidden
     overflow-y: hidden
-    background-color: whitesmoke
 
 ul.nav-stacked > li > a
     padding: 2px 15px