diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index fe449dfe0b..5e99cfd924 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -201,7 +201,7 @@ GtkTextView { // This will get overridden by .view, needed by gedit line numbers
   to { -gtk-icon-transform: rotate(1turn); }
 }
 
-.spinner {
+spinner {
   background-image: none;
   background-color: blue;
   opacity: 0; // non spinning spinner makes no sense
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index e8055e5d88..be9a832fb7 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -138,15 +138,15 @@ GtkTextView {
 @keyframes spin {
   to {
     -gtk-icon-transform: rotate(1turn); } }
-.spinner {
+spinner {
   background-image: none;
   background-color: blue;
   opacity: 0;
   -gtk-icon-source: -gtk-icontheme("process-working-symbolic"); }
-  .spinner:active {
+  spinner:active {
     opacity: 1;
     animation: spin 1s linear infinite; }
-    .spinner:active:insensitive {
+    spinner:active:insensitive {
       opacity: 0.5; }
 
 /****************
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 500563b2ad..345202b2d1 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -138,15 +138,15 @@ GtkTextView {
 @keyframes spin {
   to {
     -gtk-icon-transform: rotate(1turn); } }
-.spinner {
+spinner {
   background-image: none;
   background-color: blue;
   opacity: 0;
   -gtk-icon-source: -gtk-icontheme("process-working-symbolic"); }
-  .spinner:active {
+  spinner:active {
     opacity: 1;
     animation: spin 1s linear infinite; }
-    .spinner:active:insensitive {
+    spinner:active:insensitive {
       opacity: 0.5; }
 
 /****************