[gnome-panel/wip-tasklist: 3/3] Yaru: remove box-shadow and background of showdesktop button

[Sebastian Geiger <segeiger src gnome org>]

commit ed945a65116ea246449d85cd3de3bcd9e0dee8d8
Author: Sebastian Geiger <sbastig gmx net>
Date:   Sun Mar 1 09:30:51 2020 +0100

    Yaru: remove box-shadow and background of showdesktop button

 data/theme/Yaru/gnome-panel-dark.css | 4 ++++
 data/theme/Yaru/gnome-panel.css      | 5 +++++
 2 files changed, 9 insertions(+)
---
diff --git a/data/theme/Yaru/gnome-panel-dark.css b/data/theme/Yaru/gnome-panel-dark.css
index 54a9e38f6..3f1ceb097 100644
--- a/data/theme/Yaru/gnome-panel-dark.css
+++ b/data/theme/Yaru/gnome-panel-dark.css
@@ -109,3 +109,7 @@ gp-arrow-button:active {
   color: #eeeeec;
 }
 
+#showdesktop-button {
+  background: none;
+  box-shadow: none;
+}
diff --git a/data/theme/Yaru/gnome-panel.css b/data/theme/Yaru/gnome-panel.css
index fbdb77f6a..0ed80c237 100644
--- a/data/theme/Yaru/gnome-panel.css
+++ b/data/theme/Yaru/gnome-panel.css
@@ -11,3 +11,8 @@ wnck-pager:selected {
 #tasklist-button > box {
   background-image: linear-gradient(to top, rgba(252,252,252,.6) 3px, rgba(252,252,252,.8));
 }
+
+#showdesktop-button {
+  background: none;
+  box-shadow: none;
+}