diff --git a/core/modules/outside_in/tests/modules/outside_in_test_css/css/css_fix.theme.css b/core/modules/outside_in/tests/modules/outside_in_test_css/css/css_fix.theme.css
index 8a3c40346a..add71e4913 100644
--- a/core/modules/outside_in/tests/modules/outside_in_test_css/css/css_fix.theme.css
+++ b/core/modules/outside_in/tests/modules/outside_in_test_css/css/css_fix.theme.css
@@ -2,3 +2,25 @@
 .dialog-off-canvas__main-canvas.js-outside-in-edit-mode input {
   pointer-events: inherit !important;
 }
+/**
+ * Remove all transitions for testing.
+ */
+* {
+  -o-transition-property: none !important;
+  -moz-transition-property: none !important;
+  -ms-transition-property: none !important;
+  -webkit-transition-property: none !important;
+  transition-property: none !important;
+  /*CSS transforms*/
+  -o-transform: none !important;
+  -moz-transform: none !important;
+  -ms-transform: none !important;
+  -webkit-transform: none !important;
+  transform: none !important;
+  /*CSS animations*/
+  -webkit-animation: none !important;
+  -moz-animation: none !important;
+  -o-animation: none !important;
+  -ms-animation: none !important;
+  animation: none !important;
+}