[gnome-panel/wip-tasklist] style: add rgba gradient and margin to wnck-tasklist for Yaru theme

[Sebastian Geiger <segeiger src gnome org>]

commit ca9aa9f27b45bed7a5e720523a42c9138e211265
Author: Sebastian Geiger <lanoxx gmx net>
Date:   Fri Feb 28 23:40:26 2020 +0000

    style: add rgba gradient and margin to wnck-tasklist for Yaru theme

 data/theme/Yaru/gnome-panel.css | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/data/theme/Yaru/gnome-panel.css b/data/theme/Yaru/gnome-panel.css
index 22cb14041..c4261d8a7 100644
--- a/data/theme/Yaru/gnome-panel.css
+++ b/data/theme/Yaru/gnome-panel.css
@@ -3,3 +3,8 @@
 wnck-pager:selected {
   background-color: @theme_selected_bg_color;
 }
+
+wnck-tasklist button {
+  background-image: linear-gradient(to top, rgba(252,252,252,.6) 3px, rgba(252,252,252,.8));
+  margin-left: 2px;
+}