diff --git a/21 - Geolocation/index-FINISHED.html b/21 - Geolocation/index-FINISHED.html
index 0f2ddecf2a..9d4068876f 100644
--- a/21 - Geolocation/index-FINISHED.html	
+++ b/21 - Geolocation/index-FINISHED.html	
@@ -32,7 +32,7 @@ <h1 class="speed">
         radial-gradient(rgba(255,255,255,.1) 15%, transparent 20%) 8px 9px;
       background-color:#282828;
       background-size:16px 16px;
-      background-position: fixed;
+      background-attachment: fixed;
     }
 
     .arrow {
diff --git a/21 - Geolocation/index-START.html b/21 - Geolocation/index-START.html
index a1b981b1cd..5d771594a7 100644
--- a/21 - Geolocation/index-START.html	
+++ b/21 - Geolocation/index-START.html	
@@ -32,7 +32,7 @@ <h1 class="speed">
         radial-gradient(rgba(255,255,255,.1) 15%, transparent 20%) 8px 9px;
       background-color:#282828;
       background-size:16px 16px;
-      background-position: fixed;
+      background-attachment: fixed;
     }
 
     .arrow {