You currently need to enable `layout.css.scrollbar-colors.enabled` in `about:config` in Firefox Nightly.
@@ -53,6 +53,11 @@ table {
border-spacing: 0;
}
+html {
+ scrollbar-face-color: lighten($ui-base-color, 4%);
+ scrollbar-track-color: rgba($base-overlay-background, 0.1);
+}
+
::-webkit-scrollbar {
width: 12px;
height: 12px;