diff --git a/core/modules/outside_in/css/outside_in.module.css b/core/modules/outside_in/css/outside_in.module.css
index 2022837ef9..667dc2ec00 100644
--- a/core/modules/outside_in/css/outside_in.module.css
+++ b/core/modules/outside_in/css/outside_in.module.css
@@ -14,10 +14,10 @@
   float: right;
 }
 
-#main-canvas.js-outside-in-edit-mode a,
-#main-canvas.js-outside-in-edit-mode input {
+.dialog-off-canvas__main-canvas.js-outside-in-edit-mode a,
+.dialog-off-canvas__main-canvas.js-outside-in-edit-mode input {
   pointer-events: none;
 }
-#main-canvas.js-outside-in-edit-mode .contextual-links a {
+.dialog-off-canvas__main-canvas.js-outside-in-edit-mode .contextual-links a {
   pointer-events: inherit;
 }
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 dc9d72ad20..8a3c40346a 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
@@ -1,4 +1,4 @@
-#main-canvas.js-outside-in-edit-mode a,
-#main-canvas.js-outside-in-edit-mode input {
+.dialog-off-canvas__main-canvas.js-outside-in-edit-mode a,
+.dialog-off-canvas__main-canvas.js-outside-in-edit-mode input {
   pointer-events: inherit !important;
 }