--- a/browser/extensions/onboarding/content/onboarding.css
+++ b/browser/extensions/onboarding/content/onboarding.css
@@ -20,17 +20,17 @@
 }
 
 #onboarding-overlay.onboarding-opened {
   display: block;
 }
 
 #onboarding-overlay-button {
   padding: 10px 0 0 0;
-  position: absolute;
+  position: fixed;
   cursor: pointer;
   top: 4px;
   offset-inline-start: 12px;
   border: none;
   /* Set to none so no grey contrast background in the high-contrast mode */
   background: none;
   /* make sure the icon stay above the activity-stream searchbar */
   /* We want this always under #onboarding-overlay */