diff --git a/userChrome.css b/userChrome.css
index 8708d43..ff47851 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -197,19 +197,25 @@
 
   /*= Linux - Light System Default Theme's Selected Tab ======================*/
   @media (-moz-gtk-csd-available) and (-moz-toolbar-prefers-color-scheme: light),
-         (-moz-gtk-csd-available) and (prefers-color-scheme: light) {
+    (-moz-gtk-csd-available) and (prefers-color-scheme: light) {
     /* Because of
     #TabsToolbar:not([brighttext]) #tabbrowser-tabs:not([noshadowfortests]) .tabbrowser-tab:is([visuallyselected=true], [multiselected]) > .tab-stack > .tab-background {
       border: 1px solid var(--tab-line-color, rgba(128,128,142,0.9));
       box-shadow: 0 0 4px rgba(128,128,142,0.5);
     }
    */
-    #tabbrowser-tabs:not([noshadowfortests]) .tabbrowser-tab:is([visuallyselected=true], [multiselected]) > .tab-stack > .tab-background:not(:-moz-lwtheme) {
-      box-shadow: 0 0 4px rgba(128,128,142,0.5) !important;
+    #tabbrowser-tabs:not([noshadowfortests])
+      .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
+      > .tab-stack
+      > .tab-background:not(:-moz-lwtheme) {
+      box-shadow: 0 0 4px rgba(128, 128, 142, 0.5) !important;
     }
-    #TabsToolbar:not([brighttext]) #tabbrowser-tabs:not([noshadowfortests]) .tabbrowser-tab:is([visuallyselected=true], [multiselected]) > .tab-stack > .tab-background:not(:-moz-lwtheme) {
-      box-shadow: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9)),
-                  0 0 4px rgba(128,128,142,0.5) !important;
+    #TabsToolbar:not([brighttext])
+      #tabbrowser-tabs:not([noshadowfortests])
+      .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
+      > .tab-stack
+      > .tab-background:not(:-moz-lwtheme) {
+      box-shadow: 0 0 1px var(--tab-line-color, rgba(128, 128, 142, 0.9)), 0 0 4px rgba(128, 128, 142, 0.5) !important;
     }
   }