Revert: "Gtk-3.20: [Budgie-desktop] Polish upcoming 'notification gro…

…uping' GtkListBox styling in Raven"

Budgie 10.5 will support Gtk+ >= 3.22...
Thanks Josh.

gtk/sass/3.20/_3rd-party.scss

@@ -709,58 +709,24 @@ window.budgie-popover:not(.csd) {
   }
 
   // notification list
-  box.vertical > stack > box.vertical {
-    > .raven-header { border-bottom: 1px solid $borders_color; }
-
-    > .raven-background > viewport.frame {
-      list { background-color: transparent; }
-
-      > list > row.activatable {
-        padding-bottom: 4px;
-        border-bottom: 1px solid $borders_color;
-        background-color: transparent;
-        &:selected {
+  box.vertical > stack > box.vertical > .raven-background {
+    > viewport.frame > list > row.activatable {
+      padding-bottom: 4px;
+      border-bottom: 1px solid $borders_color;
+      &:selected {
+        &, &:focus {
           background-color: gtkopacity($selected_bg_color, 0.25);
           &:dir(ltr) { box-shadow: inset 4px 0 $selected_bg_color; }
           &:dir(rtl) { box-shadow: inset -4px 0 $selected_bg_color; }
 
-          > grid > *, // legacy
-          > box.vertical * {
-            color: $fg_color;
-            opacity: 1.0;
-          }
-        }
-
-        > box.vertical > box.horizontal > button.image-button { // 'dismiss'
-          // left-most image size = 32px?
-          margin-top: if($ref_weight < 1.0,
-                         calc((32px - 16px - (0.42rem - 0.1rem) * 2) / 2),
-                         calc((32px - 16px - (0.6rem - 0.1rem) * 2) / 2));
-          margin-bottom: if($ref_weight < 1.0,
-                            calc((32px - 16px - (0.42rem - 0.1rem) * 2) / 2),
-                            calc((32px - 16px - (0.6rem - 0.1rem) * 2) / 2));
-          &:dir(ltr) { margin-right: rem(2.7px + 4px); }
-          &:dir(rtl) { margin-left: rem(2.7px + 4px); }
-        }
-
-        // sub-list rows grouping
-        list {
-          border-radius: 2px;
-          border: 1px solid $borders_color;
-
-          > row.activatable {
-            border-bottom: 1px solid $borders_color;
-            &:last-child { border-bottom: none; }
-            &:dir(ltr) { padding: 2px rem(2.7px) 2px 8px; }
-            &:dir(rtl) { padding: 2px 8px 2px rem(2.7px); }
-
-            &:selected {
-              background-color: gtkopacity($selected_bg_color, 0.25);
+          > grid > label {
+            &, &.dim-label {
+              color: $fg_color;
+              opacity: 1.0;
             }
-
-            // title labels
-            box.horizontal > label:first-child { font-weight: 700; }
           }
+
+          > grid > image { color: $fg_color; }
         }
       }
     }