diff --git a/addons/website/static/src/css/editor.css b/addons/website/static/src/css/editor.css
index 917db1b059a..9da978caa01 100644
--- a/addons/website/static/src/css/editor.css
+++ b/addons/website/static/src/css/editor.css
@@ -415,6 +415,10 @@ table.editorbar-panel td.selected {
 /* ---- ACE EDITOR ---- */
 .oe_ace_view_editor {
   transition: all 0.2s ease-in;
+  -webkit-transition: all 0.2s ease-in;
+  -ms-transition: all 0.2s ease-in;
+  -o-transition: all 0.2s ease-in;
+  -moz-transition: all 0.2s ease-in;
   opacity: 0.3;
   position: fixed;
   top: 51px;
diff --git a/addons/website/static/src/css/editor.sass b/addons/website/static/src/css/editor.sass
index 3dc35b77a85..81e82361d13 100644
--- a/addons/website/static/src/css/editor.sass
+++ b/addons/website/static/src/css/editor.sass
@@ -367,6 +367,10 @@ $navbar_height: 51px
 
 .oe_ace_view_editor
     transition: all 0.2s ease-in
+    -webkit-transition: all 0.2s ease-in
+    -ms-transition: all 0.2s ease-in
+    -o-transition: all 0.2s ease-in
+    -moz-transition: all 0.2s ease-in
     opacity: 0.3
     position: fixed
     top: $navbar_height