[gnome-panel/wip-tasklist: 2/4] Adwaita: remove box-shadow from tasklist-button

[Sebastian Geiger <segeiger src gnome org>]

commit 6727344542604641e926c80481e06bb573dfae44
Author: Sebastian Geiger <sbastig gmx net>
Date:   Sat Feb 29 16:42:28 2020 +0100

    Adwaita: remove box-shadow from tasklist-button
    
    This removes a one pixel white box-shadow from the tasklist-button
    which seems to be added by the default Adwaita themes.

 data/theme/Adwaita/gnome-panel.css | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/theme/Adwaita/gnome-panel.css b/data/theme/Adwaita/gnome-panel.css
index d53e39191..ff4439d5b 100644
--- a/data/theme/Adwaita/gnome-panel.css
+++ b/data/theme/Adwaita/gnome-panel.css
@@ -65,6 +65,7 @@ gp-arrow-button:active {
   margin: 0;
   border: 0;
   background-image: none;
+  box-shadow: none;
 }
 
 #tasklist-button > box {