Adwaita: set scrollbar style props in a general wildcard

trying to make webkit happy.

gtk/theme/Adwaita/_common.scss

@@ -1834,6 +1834,7 @@ notebook {
  **************/
 
 scrollbar {
+  @at-root * {
     -GtkRange-slider-width: 13;
     -GtkRange-trough-border: 0;
     -GtkScrollbar-has-backward-stepper: false;
@@ -1843,6 +1844,7 @@ scrollbar {
                                          // where it belongs
     -GtkRange-stepper-spacing: 0;
     -GtkRange-trough-under-steppers: 1;
+  }
 
   $_slider_margin: 3px;
   $_slider_fine_tune_margin: 4px;

gtk/theme/Adwaita/gtk-contained-dark.css

@@ -2458,7 +2458,7 @@ notebook {
 /**************
  * Scrollbars *
  **************/
-scrollbar {
+* {
   -GtkRange-slider-width: 13;
   -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
@@ -2466,11 +2466,11 @@ scrollbar {
   -GtkScrollbar-min-slider-length: 42;
   -GtkRange-stepper-spacing: 0;
   -GtkRange-trough-under-steppers: 1; }
-  scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
-  scrollbar .titlebar button.titlebutton,
-  .titlebar scrollbar button.titlebutton {
+scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
+scrollbar .titlebar button.titlebutton,
+.titlebar scrollbar button.titlebutton {
   border: none; }
-  scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
+scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
   opacity: 0.4;
   -GtkRange-slider-width: 5px; }
   scrollbar.overlay-indicator:not(.dragging):not(.hovering) slider {
@@ -2487,15 +2487,15 @@ scrollbar {
   scrollbar.overlay-indicator:not(.dragging):not(.hovering).horizontal slider {
     margin-left: 2px;
     margin-right: 2px; }
-  scrollbar.overlay-indicator.dragging, scrollbar.overlay-indicator.hovering {
+scrollbar.overlay-indicator.dragging, scrollbar.overlay-indicator.hovering {
   opacity: 0.7; }
-  scrollbar trough {
+scrollbar trough {
   background-color: #282c2c;
   border: 1px none #1c1f1f; }
   scrollbar trough:backdrop {
     background-color: #323737;
     border-color: #1f2222; }
-  scrollbar slider {
+scrollbar slider {
   background-color: #a6a8a7; }
   scrollbar slider:hover {
     background-color: #cacbc9; }
@@ -2505,31 +2505,31 @@ scrollbar {
     background-color: #5d6262; }
   scrollbar slider:insensitive {
     background-color: transparent; }
-  scrollbar slider {
+scrollbar slider {
   border-radius: 100px;
   margin: 3px; }
-  scrollbar.fine-tune slider {
+scrollbar.fine-tune slider {
   margin: 4px; }
-  scrollbar.vertical slider {
+scrollbar.vertical slider {
   margin-left: 4px; }
   scrollbar.vertical slider:dir(rtl) {
     margin-left: 3px;
     margin-right: 4px; }
-  scrollbar.vertical.fine-tune slider {
+scrollbar.vertical.fine-tune slider {
   margin-left: 5px; }
   scrollbar.vertical.fine-tune slider:dir(rtl) {
     margin-left: 4px;
     margin-right: 5px; }
-  scrollbar.vertical trough {
+scrollbar.vertical trough {
   border-left-style: solid; }
   scrollbar.vertical trough:dir(rtl) {
     border-left-style: none;
     border-right-style: solid; }
-  scrollbar.horizontal slider {
+scrollbar.horizontal slider {
   margin-top: 4px; }
-  scrollbar.horizontal.fine-tune slider {
+scrollbar.horizontal.fine-tune slider {
   margin-top: 5px; }
-  scrollbar.horizontal trough {
+scrollbar.horizontal trough {
   border-top-style: solid; }
 
 /**********

gtk/theme/Adwaita/gtk-contained.css

@@ -2464,7 +2464,7 @@ notebook {
 /**************
  * Scrollbars *
  **************/
-scrollbar {
+* {
   -GtkRange-slider-width: 13;
   -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
@@ -2472,11 +2472,11 @@ scrollbar {
   -GtkScrollbar-min-slider-length: 42;
   -GtkRange-stepper-spacing: 0;
   -GtkRange-trough-under-steppers: 1; }
-  scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
-  scrollbar .titlebar button.titlebutton,
-  .titlebar scrollbar button.titlebutton {
+scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
+scrollbar .titlebar button.titlebutton,
+.titlebar scrollbar button.titlebutton {
   border: none; }
-  scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
+scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
   opacity: 0.4;
   -GtkRange-slider-width: 5px; }
   scrollbar.overlay-indicator:not(.dragging):not(.hovering) slider {
@@ -2493,15 +2493,15 @@ scrollbar {
   scrollbar.overlay-indicator:not(.dragging):not(.hovering).horizontal slider {
     margin-left: 2px;
     margin-right: 2px; }
-  scrollbar.overlay-indicator.dragging, scrollbar.overlay-indicator.hovering {
+scrollbar.overlay-indicator.dragging, scrollbar.overlay-indicator.hovering {
   opacity: 0.7; }
-  scrollbar trough {
+scrollbar trough {
   background-color: #d7d7d5;
   border: 1px none #9d9d99; }
   scrollbar trough:backdrop {
     background-color: #e1e1df;
     border-color: #a5a5a1; }
-  scrollbar slider {
+scrollbar slider {
   background-color: #787c7d; }
   scrollbar slider:hover {
     background-color: #535859; }
@@ -2511,31 +2511,31 @@ scrollbar {
     background-color: #c3c4c4; }
   scrollbar slider:insensitive {
     background-color: transparent; }
-  scrollbar slider {
+scrollbar slider {
   border-radius: 100px;
   margin: 3px; }
-  scrollbar.fine-tune slider {
+scrollbar.fine-tune slider {
   margin: 4px; }
-  scrollbar.vertical slider {
+scrollbar.vertical slider {
   margin-left: 4px; }
   scrollbar.vertical slider:dir(rtl) {
     margin-left: 3px;
     margin-right: 4px; }
-  scrollbar.vertical.fine-tune slider {
+scrollbar.vertical.fine-tune slider {
   margin-left: 5px; }
   scrollbar.vertical.fine-tune slider:dir(rtl) {
     margin-left: 4px;
     margin-right: 5px; }
-  scrollbar.vertical trough {
+scrollbar.vertical trough {
   border-left-style: solid; }
   scrollbar.vertical trough:dir(rtl) {
     border-left-style: none;
     border-right-style: solid; }
-  scrollbar.horizontal slider {
+scrollbar.horizontal slider {
   margin-top: 4px; }
-  scrollbar.horizontal.fine-tune slider {
+scrollbar.horizontal.fine-tune slider {
   margin-top: 5px; }
-  scrollbar.horizontal trough {
+scrollbar.horizontal trough {
   border-top-style: solid; }
 
 /**********